Race against the clock
争分夺秒
🧩 词语组成解析
race
[res]
n. 赛跑;人种;竞争;民族;
v. 参加比赛;快速移动;空转;
the
[ðə]
art. 指已提到的人（物）;指说话人与听者已知的人（物）;用于独一无二的事物前;与形容词最高级和序数词连用;
clock
[klɑk]
n. 钟，时钟;计时器;秒表;仪表;
vt. 记录（时间或速度）;测…的速度;
vi. 打卡;记下时间;
🗣️ 情景例句
What did you say? I didn't quite get that.
你说什么？我没听清楚。
She conducted herself well.
她行为端正。
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。