depend

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15世紀(jì)初期進(jìn)入英語(yǔ)，直接源自中古法語(yǔ)的dependre，意為取決于條件和原因；最初源自古典拉丁語(yǔ)的dependere： de （來(lái)自，向下） + pendere （懸著），意為向下懸著。

adj性質(zhì)的同根詞
dependent：依靠的；從屬的；取決于…的。
dependable：可靠的，可信賴的；可信任的。
adv性質(zhì)的同根詞
dependably：值得信任地。
n性質(zhì)的同根詞
dependent：依賴他人者；受贍養(yǎng)者。
dependence：依賴；依靠；信任；信賴。
dependability：可靠性；可信任。
dependance：依賴性（等于dependence）。

depend的基本意思是“吊”“懸”“掛”,作“依賴于”“依靠”解時(shí)主要指某種要出現(xiàn)的情況、未知的事實(shí)及待作出的決定等有關(guān)的事物的不確定性。引申可指信心十足或?qū)δ橙顺浞窒嘈拧?
depend多與on〔upon〕連用,只有當(dāng)主語(yǔ)是it/that時(shí),才可省略on〔upon〕,且只能接疑問(wèn)詞從句,其他情況都用作普通不及物動(dòng)詞。
It all depends或That depends表示“這很難說(shuō)”“得看情況”。
在口語(yǔ)中,作為開場(chǎng)白或結(jié)束語(yǔ)的depend upon〔on〕 it意思是“無(wú)須懷疑”“我敢說(shuō)”,可以看成是省略了you may〔can〕...。

If you say that one thing depends on another, you mean that the first thing will be affected or determined by the second.
If you depend on someone or something, you need them in order to be able to survive physically, financially, or emotionally.
If you can depend on a person, organization, or law, you know that they will support you or help you when you need them.
You use depend in expressions such as it depends to indicate that you cannot give a clear answer to a question because the answer will be affected or determined by other factors.
You use depending on when you are saying that something varies according to the circumstances mentioned.

依賴
The connecting brought out in this thesis make evaluation system not depend on special C4ISR system.
提出的設(shè)計(jì)思路使得評(píng)估系統(tǒng)不依賴于特定的指揮自動(dòng)化系統(tǒng),有利于平臺(tái)設(shè)計(jì)的獨(dú)立性。