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N-COUNT
（容器的）蓋，蓋子
A lid is the top of a box or other container which can be removed or raised when you want to open the container.
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N-COUNT
眼瞼；眼皮
Your lids are the pieces of skin which cover your eyes when you close them.
例句
A dull pain began to throb behind his lids.
他的眼皮后面開(kāi)始隱隱作痛地抽動(dòng)。
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N-SING
限制；抑制；隱瞞
If you say that someone is keeping the lid on an activity or a piece of information, you mean that they are restricting the activity or are keeping the information secret.
例句
The soldiers' presence seemed to keep a lid on the violence...
士兵的存在似乎抑制住了暴力活動(dòng)。
Their finance ministry is still trying to put a lid on the long-simmering securities scandal.
他們的財(cái)政部仍在試圖遮掩一觸即發(fā)的證券丑聞。
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N-SING
（對(duì)開(kāi)支的）控制，封頂
If you say that you want to keep a lid on the cost of doing something, you mean that you want to prevent it costing you more than you feel is reasonable.
例句
If our industry is to remain competitive it must mean keeping a lid on prices.
我們的行業(yè)要想保持競(jìng)爭(zhēng)力，就必須對(duì)價(jià)格加以控制。