Latchkey kid
n. 挂钥匙儿童（指因为父母出去工作, 所以放学后独自在家、无人照看的孩子）
🧩 词语组成解析
latchkey
[['lætʃki:]]
n. 弹簧锁钥匙
kid
[kɪd]
n. <口>小孩;小山羊，小山羊皮制品;
vt.& vi. 欺骗，戏弄，取笑;
adj. 较年幼的;小山羊皮制的;
🗣️ 情景例句
Keep your nose to the grindstone; you'll succeed.
埋头苦干，总有成功的一天。
Scientists contribute to the well-being of mankind.
科学家为人类造福。
I had all the usual symptoms of someone giving up smoking: a bad temper and an enormous appetite.
脾气暴躁和食欲旺盛。