Plumb-line
vt. 用鉛錘線測量, 檢查, 探測
?? 牛津釋義
plumb-line
n line with a plumb(1) attached to one end 鉛垂線.
?? 詞語組成解析
line
[la?n]
n. 線條;排;行列;界線;
vt. 排隊;用線標(biāo)出;沿…排列成行;給…安襯里;
vi. 形成一層;排隊;擊出平直球;
??? 情景例句
If you have something you want to talk about,
假如你有什么事情要談，
To jump for joy
雀躍
Someone is ringing the bell.
有人在按門鈴。