Casesiumphotocell
[電] 銫光電池
??? 情景例句
He's cheating on his wife.
他對妻子不忠。
There's nothing like a cup of tea when you're thirsty.
當你口渴時，沒有什么東西比一杯茶更好了。
There is a bridge over the river.
河上有一座橋。