Chemex
化学交换(同位素浓缩)过程
🗣️ 情景例句
I'd miss them a lot,
我会非常想念他们的，
Will you please measure this window to see how wide it is?
请您测量这扇窗户看它有多宽？
'Did you have a good meal? he asked.
“您吃得好吗？”他问。