Plumb line
铅垂线
🧩 词语组成解析
line
[laɪn]
n. 线条;排;行列;界线;
vt. 排队;用线标出;沿…排列成行;给…安衬里;
vi. 形成一层;排队;击出平直球;
🗣️ 情景例句
we need to put together volunteers
我们需要募集义工
I'm reading a book.
我在看书。
They never become submissive like dogs and horses.
它们从不像狗和马一样变得那么顺从。