Farvitron
线振质谱计
🗣️ 情景例句
Give me a scotch on the rocks.
给我杯加冰的苏格兰威士忌。
I will be very glad when I receive the letter.
如能接到你的来信，我将会非常高兴。
This decline in vigour with the passing of time is called ageing.
生命力随时间的流失而衰退叫做衰老。