n. 钥匙;(打字机等的)键;关键,线索,秘诀;(音乐的)调;
vt. 键入;锁上;调节…的音调;提供线索;
vi. 使用钥匙;
adj. 关键的;主要的;
🗣️ 情景例句
Honey, if there were any problems,
亲爱的, 假如有事的话,
I phoned him last Saturday.
我上个星期六打电话给他。
The Native Americans caught and trained them and were then able to use them to carry their goods when they travelled from one camping ground to another.