Ambulators
n. [测] 测距仪；测程轮
🗣️ 情景例句
How long?
多久？
I'm not familiar with that part. Let me call someone who is more knowledgeable.
那部分我不熟悉，让我找专业人士来说明。
It is almost always due to some very special circumstances that traces of land animals survive,
几乎总是由于某些特殊的条件，陆地动物的遗体才被存下来，