Unhexoctium
[化]168号元素
🗣️ 情景例句
We communicate with each other by letter.
我们用书信彼此联系。
No. Forget about it. It's not important.
哪儿的话，别提这件事了，那不算什么。
His great flight lasted thirty-seven minutes.
他这次伟大的飞行持续37分钟。