Rectosigmoidoscopy
[医] 直肠乙状结肠镜检查
🗣️ 情景例句
I can't express myself very well in English.
我用英语表达不好。
I will take a subway.
我将去搭地铁。
Similarly, our own present primitive chemical rockets, though good enough to orbit men,
同样，我们目前使用的原始化学火箭，虽然可以把人送入轨道，