Wavefronts
(wavefront 的复数) [计] 波前
🗣️ 情景例句
All I do is study and take exams.
我要接受所有的学习和考试。
Slow help is no help.
帮忙不及时，等于不帮忙。
The railway station was big, black and dark.
火车站很大，又黑又暗。