Wavefronts
(wavefront 的复数) [计] 波前
🗣️ 情景例句
We communicate with each other by letter.
我们用书信彼此联系。
The whole thing was held up about half an hour.
整个事情耽搁了约半小时。
What a pity! Never mind. We must get together some other time for a chat.
真可惜！不过不要紧。我们必须找个时间聚一聚、聊一聊。