Unna's pencil
[医] 乌纳氏笔剂, 棒剂
🧩 词语组成解析
🗣️ 情景例句
It's the first thing people will see when they come in.
这是人们走进来所看到的第一 件东西。
You're way behind schedule.
你比预定的落后了。
Suddenly the door of the storeroom was opened and a man entered.
突然贮藏门开了，一个男人走了进来。