日期:
来源:雅诚德英语网
In fact, fossil beds containing soft-bodied animals have been known for many years.
事实上,含有软体动物的化石层已经被发现很多年了。
In fact, fossil beds containing soft-bodied animals have been known for many years.
事实上,含有软体动物的化石层已经被发现很多年了。