Yttrium
n. 钇\\n[化] 钇Y
🗣️ 情景例句
Fast asleep.
正熟睡着呢。
May I use your typewiter?
我能用你的打字机吗？
It can take as long as eight days to rig up rope ladders and to establish supply bases before a descent can be made into a very deep cave.
有时需要花费整整8天时间来搭起绳梯，建立供应基地，然后才能到一个很深的洞穴里。