Boas's sign
[医] 博阿斯氏征(胃癌时胃液含有乳酸;胆囊炎时腰部感觉过敏)
🧩 词语组成解析
🗣️ 情景例句
Typing is easy once you get the hang of it.
一旦你掌握诀窍，打字就很简单。
I'm afraid you will miss your test.
我怕你会错过测验。
I'm tired, said my younger brother as he climbed up to join me.
“我累了，”我弟弟边说边爬上岩石和我汇合。