Sers
表面增强拉曼谱仪
🗣️ 情景例句
What a bargain! Thanks for helping me with this shopping.
真是太划算了！谢谢你带我买这些东西。
He seldom came to see his wife, did he?
她不来看他妻子，是这样吗？
How long are you staying in Xi'an?
你要在西安呆多久？