Null axis
[计] 零位轴
🧩 词语组成解析
🗣️ 情景例句
Notices are displayed on the bus asking people not to smoke.
公共汽车上张贴着请勿吸烟的公告。
I learned English this morning.
我今天早上学英文。
In summer it is often too hot, and in winter it is too cold.
夏天常常太热，冬天又常常太冷。