Chromocytometer
血红蛋白计
🗣️ 情景例句
Mmm-hmm. Thanks.
嗯。谢谢。
What is that noise?
那嘈杂声是什么？
Look at this letter from Wang Wei to her penfriend in Australia.
请看这封王伟写给她在澳大利亚的笔友的信。