Cactus needle
[电] 仙人掌唱针
🧩 词语组成解析
cactus
['kæktəs]
n. 仙人掌;
needle
['nidl]
n. 针;针状物;<口>刺激性言行;
vt. 用针缝，刺;刺激，激怒;<俚>增加（饮料的）酒精含量;
vi. 缝纫;
🗣️ 情景例句
Oh, it's beautiful, Rita Mae!
噢 ，太漂亮了， Rita Mae！
Labour is light where love doth pay.
爱情作酬报，劳苦必轻松。
and by measuring the time interval between the taps and the receipt of the echoes, the depth of the sea at that point can be calculated.
测出回声间隔的时间，便可算出该处海洋的深度。