Lanthanoid
镧系元素
🗣️ 情景例句
You mean you never do anything yourself?
你意思是你自己不做任何事？
Quick feet and busy hands fill the mouth.
手勤脚快，嘴里吃饱。
Ha ha ha! Goodbye, Mr Tiger,laughed the monkey and he went away.
“哈哈哈！再见，老虎先生，”猴子哈哈大笑，走开了。