Photoelectrons
n. 光电子
🗣️ 情景例句
To be away from the city on such a beautiful day
在这样美好的一天远离都市
He who follows two hares is sure to catch neither.
追逐两只兔，两头都落空。
The winch was again put into operation and one of the men started up the truck.
绞盘机再次启动，一位工人发动了急修车的引擎。