Xtr
[计]= eXTRa,[修]特别的，额外的，附加的
🗣️ 情景例句
Would you mind-giving me that-red-book?
能把那本红色的书递给我吗？
When the tree is fallen, every one runs to it with his axe.
大树一倒下，人人持斧来。
and they provided a striking demonstration of the potentialities hidden in instruments and apparatus.
并充分显示出了仪表和仪器的潜在力量。