Polyenoic acid
[化] 多烯酸
🧩 词语组成解析
🗣️ 情景例句
I need a new toothbrush. My old one's worn out.
我需要一支新牙刷。旧的用坏了。
It's windy this afternoon.
今天下午起风。
It is also useful for sending pictures, designs, maps and so on.
传真机也可以用来发送图片、地图等。