Beckmann's apparatus
[医] 贝克曼氏仪器(测定分子量用)
🧩 词语组成解析
🗣️ 情景例句
What about you?
你呢？
He who is afraid of asking is ashamed of learning.
害怕问者耻于学。
Who won the girls' 400 metres?
女子400米赛跑谁获胜？