Know sth by heart
记住,背熟,牢记在心,熟悉某事
🧩 词语组成解析
know
[no]
v. 知道;了解;认识;确信;
n. 知情;
[医] 生长激素
by
[baɪ]
prep. 在…旁边;表示方式;由于;经过;
adv. 经过;表示保留或保存时用;短暂拜访;
heart
[hɑrt]
n. 心，心脏;感情;要点;胸部;
vt. 鼓励;激励;
vi. 结心;
🗣️ 情景例句
Our troop was under his command.
我们的部队由他指挥。
None so deaf as those that won't hear.
置若罔闻。
We had roast beef and potatoes.
我们吃的是烤牛肉和土豆。