Nod sb back
点头示意某人回来
🧩 词语组成解析
nod
[nɑd]
vi. 点头;打瞌睡;上下摆动;变得粗心大意;
vt. 点头示意;使弯曲，使屈服;点头答应;
n. 点头;点头同意;打瞌睡，打盹;粗心大意;
[计] 栈底, 标准二进制, 减, 备用设备\\n[医] 锑(51号元素)
back
[bæk]
n. 背，背部;背面，反面;后面，后部;（椅子等的）靠背;
vt. 使后退;支持;加背书于;下赌注于;
vi. 后退;倒退;
adj. 背部的;后面的;以前的;拖欠的;
adv. 以前;向后地;
🗣️ 情景例句
I was faced with a new problem.
我面临了新的问题。
An oak is not felled at one stroke.
万事不能一蹴而就。
Oil rigs have to be repaired frequently and divers,who often have to work in darkness a hundred feet under water,
钻井平台需要经常修理，潜水员常常要在水面100英尺以下摸黑工作，