固定表达，在语境中理解。

保守秘密

Can you keep a secret until Saturday? We are planning a surprise party for our teacher.

留意；警觉地寻找

Keep an eye out for the blue delivery van while I wait beside the community center entrance.

记住；牢记

Keep in mind that the north entrance closes early, so visitors should use the main doors after six.

小声点；把音量调低

Please keep it down after ten; the baby has finally fallen asleep.

跟上；与……并进

The small clinic added evening appointments to keep pace with the neighborhood's growing population.

保持安静；保守秘密

The reporters agreed to keep quiet until the family made an announcement.

陪伴某人

A friendly dog can keep someone company during a long winter.

记录；掌握……的动态；跟踪

Each volunteer keeps track of the tools returned at the end of the shift.

开始生效；开始起作用

The pain medicine should kick in within half an hour, so the nurse asked him to rest for a while.

开始；拉开序幕

The summer festival kicks off at noon with a short parade through the old market square.

肾衰竭

The specialist explained how early treatment can slow kidney failure.

有点；稍微（非正式口语）；有点；稍微（口语）

The room feels kind of cold near the window, so let's close the curtain.

有点像；有几分像

This soup tastes kind of like the one your grandmother used to make.

……类型的人；……这样的人

She's the kind of person who remembers every neighbor's birthday.

这类事情；这种东西

That is exactly the kind of thing our neighbors bring to a potluck.

占据领先地位的人或事物；赢家

By the end of the season, he was king of the hill in the local chess league.

拆除；撞倒；击倒

The crew knocked down the unsafe shed before the new playground was built.

敲（门或表面）

Before entering the soundstage, the new actor knocked on the side door and waited for the floor manager.

击败；淘汰（对手或参赛者）

The rookie knocked out the defending champion in the semifinal and earned a place in the final.

懂得更好的做法；知道不该那样做

I did not know any better when I trusted that too-good-to-be-true offer.

明白不该那样做；懂得更好

You know better than to leave the side gate open when the dog is outside.

确切知道；非常清楚

I know exactly where the spare key is hidden.

知道如何做；会做

After a few lessons, Maya knows how to reset the lab's backup generator safely.

知道区别；分辨得出差异

I know the difference between a repair estimate and a binding guarantee.

最后但同样重要的是

Last but not least, I want to thank the staff who stayed after closing.

最后的机会

This is your last chance to reserve a seat before registration closes.

过去这两三天；最近几天

The river has risen steadily over the last couple of days.

最后一刻；临近截止时

She changed the presentation at the last minute after receiving the updated figures.

上个月

I renewed my passport last month, so it's ready for the trip.

姓；姓氏

Please write your last name at the top of the form.

昨晚；昨天夜里

The power went out twice last night, so I left a flashlight beside the bed.

最后手段；万不得已的办法

We should use the backup generator only as a last resort because fuel is limited.

上一次；上回

Last time we took the coastal road, we found a quiet beach just before sunset.

上周

We visited the glass studio last week and watched the artist shape a blue vase.

最后决定权；最终发言

The editor had the last word on the title before publication.

去年；上一年

We moved the studio to a quieter street last year.

嘲笑；因……发笑

The children laughed at the puppet's silly hat, then asked the performer how it was made.

洗衣房；洗衣间

Someone left a basket of clean towels in the laundry room.

解雇；暂时停止做某事

The factory had to lay off several workers when orders fell, but it promised to rehire them when production recovered.

准备周期；提前期

The supplier needs a six-week lead time for custom parts.

了解；学习有关……的知识

The children learned about local birds during the walk and recorded each call in their notebooks.

从……中吸取经验；向……学习

We learned from the first power failure and installed a second battery before reopening the studio.

学会；学习做……

Nora learned to change a tire after her first roadside breakdown.

留言；留口信

If the manager is away from her desk, leave a message with the front office.

别碰它；别再干涉

The soup is still simmering, so leave it alone for five more minutes before adding the cream.

就此打住；不再多说或深究

After agreeing on the repair date, we decided to leave it at that and end the call.

越来越少；程度越来越低

As the evening went on, the plaza grew less and less crowded.

少即是多；简约反而更好

For this chart, less is more: two clear colors are easier to read.

少于；不到；少于；不到；比……更少

The shuttle takes less than twenty minutes to reach the airport, even during rush hour.

两害相权取其轻；较不糟的选择

Both routes were crowded, so we chose the lesser of two evils and took the slower highway.