Question

imperative 【imperative】adj.1.必需的 2.命令的For the mountain climber, it is imperative to get food and water before sunset.那个登山者必须在日落前得到食物和水。My wife has such an imperative voice that everyone obeys her.我太太用一种命令的声音，因此每个人服从她。

Accepted Answer

[ɪm'perətɪv] 
imperativerequiring attention or action
When something absolutely has to be done and cannot be put off, use the adjective imperative.
Imperative is from Latin imperare "to command," and its original use was for a verb form expressing a command: "Do it!" is an imperative sentence. It's still used that way, but it's more commonly applied to something so pressing it cannot be put off: "Hiring new workers has become imperative."  It has more immediate force than pressing but less than urgent.
All forms of 'imperative' will appear on average once every 749 pages.imperativeimperativelyimperativeness

Front	imperative
Pron	[ɪm'perətɪv]
Back	【imperative】 adj.1.必需的 2.命令的 For the mountain climber, it is imperative to get food and water before sunset. 那个登山者必须在日落前得到食物和水。 My wife has such an imperative voice that everyone obeys her. 我太太用一种命令的声音，因此每个人服从她。
Vocab	imperativerequiring attention or action When something absolutely has to be done and cannot be put off, use the adjective imperative. Imperative is from Latin imperare "to command," and its original use was for a verb form expressing a command: "Do it!" is an imperative sentence. It's still used that way, but it's more commonly applied to something so pressing it cannot be put off: "Hiring new workers has become imperative." It has more immediate force than pressing but less than urgent. All forms of 'imperative' will appear on average once every 749 pages. imperative imperatively imperativeness

Imperative Put Pressing ɪm'perətɪv Adj.1.必需的 2.命令的 Mountain Climber