固定表达，在语境中理解。

骨髓

The donor's bone marrow was a match, so the transplant team scheduled the next tests.

两者都；两者中的双方

Both of the proposed routes pass through the park, but only one avoids the steep hill.

我们两个人都；我们俩

Both of us arrived early, so we helped the librarian set up the reading room.

最重要的事实；归根结底；关键结论；最重要的一点

The bottom line is that the project needs one more month of funding.

吹嘘；炫耀

Even though she won the award, Nia never brags about her achievements at work.

拓展到新的领域或活动

The small bakery plans to branch out into catering next year.

全新的；崭新的

They bought a brand new sofa after measuring the living room twice.

停下来去……；暂停以便……

The crew broke for lunch as soon as the rain stopped.

打破；摆脱（惯例或传统）

The director broke from tradition by casting newcomers in the lead roles.

率先报道一则新闻；独家披露消息

The reporter broke the story after verifying the documents with two independent sources.

与……分手

After months of arguing about where to live, they decided to break up with each other and move on.

带回；使恢复；唤起回忆

The museum brought back its popular night tour after installing safer lights along the garden path.

降低；打倒；使倒下

The team brought down the old stage curtain carefully so the theater could replace its damaged track.

把它带回来；归还它

Please bring it back to the front desk before the library closes.

提起这件事；把它拿出来

If the budget question comes up, bring it up before the group votes.

显露；激发出（某种特质）

A friendly challenge can bring out the best in the whole team.

偶然遇见；偶然碰到

I bumped into my former piano teacher at the farmers' market while buying peaches.

因长期过劳而精疲力竭

If the team skips every break, its members may burn out before launch.

烧尽；燃烧殆尽

The dry leaves burned up in the fire before the rain reached the garden.

突然开始（某种情绪或活动）

The audience burst into applause as the curtain rose.

照常营业；一切照旧

Despite the renovation, the library remained open, and it was business as usual for visitors.

名片

At the conference, I exchanged a business card with the architect.

不过话说回来；可是随后

We were ready to leave, but then the last train was canceled.

不过话说回来；但另一方面

The train is faster, but then again, the bus stops closer to our hotel.

插嘴；打断别人说话

I do not mean to butt in, but your microphone is still on.

相信；接受（某种说法）

The excuse sounded polished, but I didn't buy it because the details kept changing.

意外地；无意中；意外地；并非故意地

The toddler opened the music app by accident while reaching for the picture book on the table.

据各方所说；据大家所知

By all accounts, the restoration has preserved the building's original character.

总体上；大体而言；总的来说；大体上

By and large, the neighbors have been great; they even take in our packages.

碰巧；不知道是否……

Do you have the caretaker's number by any chance, or should I ask the front desk to call him?

一点也不；绝不（常与否定连用）

The repair wasn't cheap by any means, but it kept the old van on the road.

偶然；碰巧

The two researchers met by chance at a conference and discovered that they were studying the same archive.

相比之下；通过比较来看

By comparison, the new route cuts the trip by twenty minutes and requires no transfer.

相比之下；相较而言

Azzam, by contrast, favored continuing to fight in Afghanistan until it had a true Islamist government.

按定义；顾名思义

A square has four equal sides by definition, so no measuring is needed.

远远；明显地（用于强调比较）

Of the three routes, the coastal road is by far the most scenic.

手工；人工地

The conservators labeled each fragment by hand because the old ink could not be scanned safely.

熟记；凭记忆

Before the recital, Lila learned the opening poem by heart and practiced its rhythm each morning.

通过；借助

Blood samples are collected from all enrolled patients and control subjects by means of a one-time venipuncture.

错误地；无意中

I sent the draft to the wrong mailing list by mistake, so I quickly asked everyone to delete it.

独自；靠自己

I assembled the desk by myself using the instructions and one small screwdriver.

绝不；一点也不

The states described here are by no means the only ones that have made progress.

到现在；此刻应该已经

By now, the soup should be warm enough to serve, but taste it once before bringing it to the table.

到……结束时；在……结束之前

By the end of the month, every apartment should have a working smoke detector in the hallway.

同样地；出于同样的理由

We should make the route safer for cyclists; by the same token, drivers need clearer signs.

等到……的时候；在……之前；到……的时候；当……时已经；到……的时候；等到……时

By the time we reached the theater, the previews had already started.

到那时；在那之前

The electrician expects to finish the repair by then, so we should be able to reopen the studio at noon.

最迟到明天；明天之前

Please send the signed form by tomorrow so the office can process the request.

凭借；由于

By virtue of her years of field experience, she was asked to lead the rescue team.

作为；通过……的方式

The report opens with a brief case study by way of introducing the broader issue.