Xtr
[计]= eXTRa,[修]特别的，额外的，附加的
🗣️ 情景例句
Keep right unless overtaking.
要靠右驾驶，除非超车。
I think she works much too hard.
我认为她未免太过辛劳了。
They did not even tell their wives.
但他俩连自己的妻子都没告诉。