key的三种意思有,作可数名词,有“钥匙、关键、钢琴键”的意思;作形容词,有“极重要的,关键性的”意思;作动词,有“用键盘输入,成为取得...的关键因素”的意思。
1、key作可数名词
You need the key to get into the drawer.
你要有钥匙才能打开抽屉。
If you want to improve your health, exercise is the key.
如果你想改善健康状况,锻炼是关键。
2、key作形容词
Underline key words and phrases as you read.
阅读时要把关键词和短语划出来。
3、key作动词
The changes to the manuscript are being keyed by the typist.
打字员正在录入对原稿的改动。