Electrochromics
电变色
🗣️ 情景例句
You're really stretching the truth.
你太言过其实了。
It is too late to come with the water when the house is burnt down.
马后炮。
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。