Na
北美洲, 国立研究院院士, 国立研究院, 国民军\\n[医] 钠(11号元素)
🗣️ 情景例句
Subway transportation is very advanced in Longdon.
伦敦地地铁非常先进。
I thought about going to my sister's. How about you?
我想去姐姐家玩，你呢？
We must decide which one to buy.
我们必须决定要买那一台。