Wachenheim-reder sign
[医] 瓦-雷二氏征(见于阑尾炎)
🧩 词语组成解析
红(外)光测距仪
🗣️ 情景例句
She majored in math and physics at university.
她在大学里主修数学和物理。
Fortune to one is mother, to another is stepmother.
命运对一种人如亲娘，对另一种人却是晚娘。
If we buy the smaller one, the IBM PC386, we might have to change it in a few years' time for a bigger one.
如果我们买一台较小的IBM386的话，过几年可能就得换一台较大的机子。