Skeletogeny
骨胳形成[发生]
🗣️ 情景例句
I couldn't be more sure, Susan.
我再确定不过了， Susan。
After dinner I read a magazine and made some telephone calls.
在晚饭以后我读一本杂志和打了一些电话。
why have we had no visitors from outer space yet?
那么我们为什么还未见到外层空间来访的客人呢？