key in

基本解釋

Tolbert says employment is the key in a nation still recovering from conflict where the United Nations estimates formal sector unemployment at 80 percent.
But what we're trying to do now is identify the key influencers in those merchant areas and make them distribution points.
但我們現(xiàn)在努力要做的是,在商界確定,最重要的影響因素,讓他們變?yōu)榉桥潼c。
斯坦福公開課 - Twitter之父Jack.Dorsey演講：好奇和靈感的力量課程節(jié)選
But a real key in looking at these plots is where we, in fact, did go through zero and have this zero probability density.
是我們經(jīng)歷這些零值,而且有這些零概率密度,我們把它叫做節(jié)點。
麻省理工公開課 - 化學原理課程節(jié)選

The patent disputes have been key in spurring talks about Apple diversifying its suppliers.
FORBES: Morning Tech Wrap: Skype, Apple, Lenovo

If you key something in, you put information into a computer or you give the computer a particular instruction by typing the information or instruction on the keyboard.