Rectus abdominis
腹直肌
🧩 词语组成解析
[医] 直的, 直肌
腹肌痛
🗣️ 情景例句
It's a great college.
那是一所好大学。
To jump into the pool
跃入游泳池中
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。