Knowest
vt. 知道, 了解, 懂得, 通晓, 掌握…的知识(或技能)：；确知, 确信, 确认：\\nvi. 知道, 了解, 懂得, 确知, 知情：\\nn. [口语]知道, 知晓, 知情[主要用于习语]
🗣️ 情景例句
Keep your nose to the grindstone; you'll succeed.
埋头苦干，总有成功的一天。
I dropped the letter in the mailbox on the corner.
我把信放到角落上的邮箱里。
It is being repaired by a friend of my father's.
父亲的一个朋友正在修理这件乐器。