Diphthongal
a. 二合元音的, 连字的
🗣️ 情景例句
He emphasized the importance of being honest.
他强调诚实的重要性。
Walk, don't run, to the nearest exit.
从最近的出口出去，别瞎跑。
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。