Fetoscopy
n. 用胎儿镜观察胎儿
🗣️ 情景例句
Never pump gas with the engine running.
发动机在运转时，别加油。
A squirrel cracks the nuts.
松鼠在啃坚果.
But if you are a serious private investor,
但是，如果你是一个认真的私人投资者，