Unconstant
a. 易变的, 无常的
🗣️ 情景例句
I don't usually listen to the weather. They never get it right!
我不怎么听天气预报。他们总报不准。
Send a postcard to me when you arrive in Shanghai.
你到上海以后给我发张明信片。
Because the equipment for adding sound to films had not yet been developed.
因为给电影配音的设备还没有研制出来。