a baby's development in the womb胎儿在子宫内的发育The baby’s head was starting to emerge from the womb.婴儿的头开始从母亲的子宮中露出来。A scan determines the position of the baby in the womb.扫描可以确定胎儿在子宮中的位置.The baby's head was starting...
As the army retreated, it laid waste to thousands of acres of farmland.军队后撤时毀坏了几千英亩农田。'I've already got a job,' I said quickly, and retreated from the room...“我已经有了一份工作。”我马上说道，并从房间里退了出来。As he onward , Cadm...
May the sight of our human beings can only see apparent horizon forever.也许我们人类的目光永远只能够看到地平线.The time - like limIt'surface, the apparent horizon and the event horizon no longer coincide each other.这种黑洞的事件视界 、 表观视界和类时...