固定表达，在语境中理解。

从上到下；彻底地

We searched the cabin from top to bottom before calling the ranger.

追查并找到

We tracked down the owner of the wallet and returned it before she left town.

艰难困苦；种种波折

The memoir describes the team's trials and tribulations before its first win.

试试看；尽管说/做（表示自己愿意应对挑战）

If you think I can't fix the old radio, try me; I repaired one just like it last week.

故意视而不见；佯装不知

The landlord cannot turn a blind eye to repeated leaks in the building.

实现盈利；赚到利润

The co-op expects to turn a profit once its new delivery service reaches more neighborhoods.

折回；返回；使折返

We turned back before the summit because thick fog covered the path and the forecast warned of snow.

扭转局势；反败为胜

The visiting team turned the tables in the final quarter by forcing three turnovers.

向……求助；转向

When the printer stopped working before the deadline, I turned to the office technician for help.

转折点

The first successful trial marked a turning point for the research team.

说说自己的看法；提出一点意见

Before the vote, let me add my two cents about the new schedule.

两天

The landlord gave us two days to clear the storage room.

两分钟

Give the printer two minutes to warm up before you send the next file.

两个人

Only two people signed up for the early tour.

被逮捕；在押

The suspect was under arrest before the reporters arrived at the station.

正在考虑之中；在审议中

A second bus route is under consideration, but the council has not approved its cost.

正在施工；正在建设中

The west entrance is under construction, so please use the side door.

得到控制；被控制住；在控制之中；得到控制；控制住；保持在可管理的状态

The small kitchen fire was under control by the time firefighters reached the apartment.

未满……岁；年龄低于……

Children under the age of twelve must stay with an adult throughout the boat tour.

由……控制；受……管理

The east gate is under the control of the park staff after closing time.

以为；持有某种看法（常接 that 从句）

I was under the impression that the library closed at six, so I arrived too late to return the books.

受酒精或药物影响；处于影响之下

The driver was found to be under the influence of alcohol at the time of the collision.

在……影响下；受……支配

Under the influence of cold ocean air, the morning fog often reaches the harbor road.

世上所有的；各种各样的

We checked every shop under the sun, but none had the replacement part.

表面之下；在深层

Under the surface, the two neighbors were still upset about the fence.

暗中支付或收取的；不入账的

The contractor paid the workers under the table to avoid payroll taxes.

根据……的条款；按照……的约定

Under the terms of the lease, the owner must repair the heating system before winter.

正在进行；已经开始

Creation of a statewide brief bank is under way, with funding from the Pennsylvania Bar Foundation.

直到现在；迄今为止

Until now, the town has relied on a single well, but a second water source is almost ready.

在那之前；直到那时

The replacement oven arrives Friday; until then, the bakery will use the smaller one.

面临；遭遇（困难或竞争）；面临；遭遇（困难或强大对手）

Small suppliers are up against rising costs and longer payment delays.

崭露头角的；正在走红或发展中的

The gallery gave an up-and-coming ceramic artist her first solo exhibition.

开始运转；投入使用

The backup server was up and running before the main system went offline.

愿意；有兴趣做……；愿意做；有意参加

Are you up for a short walk after dinner? The weather should be cooler by then.

预先；提前；在前面

The repair shop told us up front that the replacement part might take a week to arrive.

在这上面；在这高处

The air is cooler up here on the ridge.

尚未确定；悬而未决

Our weekend plans are still up in the air because the ferry might be canceled.

长达；最多达到；由……决定；取决于

It lasts for up to a year and goes very well with a dry Madeira wine.

最新的；更新到当前的

The registry is up to date through December 2025.

熟悉最新情况；达到所需进度或水平

The new analyst read the project notes over the weekend to get up to speed before Monday's meeting.

由你决定；取决于你

We can order lunch now or wait for the rest of the group; the timing is up to you.

上风；优势

The home team gained the upper hand after its captain spotted a gap in the defense.

起起落落；顺境与逆境

The memoir describes the ups and downs of a family rebuilding its farm after a flood.

上下颠倒；乱七八糟

The strong wind turned the picnic table upside down and scattered the paper plates across the grass.

过去常常；以前经常；过去常常；以前会

I used to walk to the bakery before it moved across town.

……的受害者；遭受……的人

The elderly couple became victims of a phone scam after someone pretended to be their bank.

等待；等候

We waited for the rain to stop beneath the station awning before walking to the museum.

等着瞧；你猜接下来怎样（用于吊起注意或制造反差）；等着看；等一下就知道了

The café promised a surprise dessert, and wait for it—it was the same cake we had ordered last week.

为……提供服务；招待（顾客）

During the lunch rush, the new server waited on six tables while the manager handled phone orders.

等着不睡；等某人赶上

We waited up for the late train because our daughter was coming home from college.