Mayn't
(=may not)的缩写
🗣️ 情景例句
What do you do for a living?
你以什么为生？
Full details regarding packing and marking must be strictly observed.
请严格遵守包装及商标的细则。
In the midst of all this movement, the weight and the pen would be still.
重物和笔都却不运动。