🧩 词语组成解析
[计] 正文处的
frustrated
[[frʌs'treitid]]
a. 失意的, 挫败的；泄气的
🗣️ 情景例句
I used to be that way when I was her age.
我像她这般年纪也是这样。
To work overtime
加班
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。