Binilunium
[化]201號元素
??? 情景例句
Keep your nose to the grindstone; you'll succeed.
埋頭苦干，總有成功的一天。
Can I have a second-class one way ticket to Chicago,please?
請給我一張去芝加哥的單程二等票好嗎？
Our order specified no substitutions.
我們訂單上特別裁明了“拒收替代品”。