(N. Amer. informal)mentally deficient(北美， 非正式)智力上有缺陷的
clear the deck【非正式用語(yǔ)】
To prepare for action.準(zhǔn)備開(kāi)始行動(dòng)
hit the deck&I{【俚語(yǔ)】}
To get out of bed.起床To fall or drop to a prone position.倒下呈俯臥姿勢(shì)To prepare for action.準(zhǔn)備開(kāi)始行動(dòng)
on deck
On hand; present.在手頭；在場(chǎng)的&I{Sports} Waiting to take one's turn, especially as a batter in baseball.&I{【體育運(yùn)動(dòng)】} 準(zhǔn)備下一個(gè)上場(chǎng)：擊球員準(zhǔn)備下一個(gè)上場(chǎng)的，尤指在棒球運(yùn)動(dòng)中
英語(yǔ)四級(jí)真題
Each ship was coal-powered by several boilers constantly kept running by exhausted crews below deck.
2018年6月四級(jí)真題（第一套）閱讀 Section C
柯林斯高階英漢雙解學(xué)習(xí)詞典釋義
N-COUNT
(公共汽車(chē)、船等的）層面，（一）層
A deck on a vehicle such as a bus or ship is a lower or upper area of it.
If you clear the decks, you get ready to start something new by finishing any work that has to be done or getting rid of any problems that are in the way.