講解：
cross sb / sth off | cross sb / sth off sth
(從名單或清單上)畫掉,刪掉:
We can cross his name off; he's not coming.
他不來了,我們可以把他的名字畫掉了。

be premature
草率的；倉促的:
It is premature to talk about success at this stage.
現階段就談成功尚為時過早。

get into a situation
面臨情況；狀況；形勢；局面:
You could get into a situation where you have to decide immediately.
你可能遇上一種情況,使你不得不立刻作出決定。

be trapped
使落入險境；使陷入困境:
They were trapped in the burning building.
他們被困在燃燒著的樓房里。

corner the market
壟斷(某種貨品的交易):
They've cornered the market in silver.
他們壟斷了白銀市場。

buzz (for sb / sth)
用蜂鳴器(發信號):
The doctor buzzed for the next patient to come in.
醫生按蜂鳴器叫下一個病人進來。