Varion
一种离子交换树脂
🗣️ 情景例句
He's poor.
他很穷。
Thank you. It was very kind of you.
谢谢，您太好了。
'I have just arrive in Scotland and I'm staying at a Youth Hostel.'
“我刚到苏格兰，我现住在一家青年招待所。”