Skeletogeny
骨胳形成[发生]
🗣️ 情景例句
This is a tough job.
这是一件困难的工作。
A journey of a thousand miles begains with a single step.
千里之行，始于足下。
and then generalized the results of his many experiments into the famous law of free fall.
然后将多次实验结果概括成著名的自由落体定律的人。