I felt a little queasy on the ship.我在船上觉得有点晕眩想呕吐.Some people feel queasy about how their names and addresses have been obtained.一些人为自己的姓名和地址是如何被泄露出去的感到不安。He was very prone to seasickness and already felt queasy.他快晕船了，已经感...
Once the ovum is released it has a lifespan of 12 to 36 hours.卵子排出后可存活12至36小时。an immature ovum未成熟的卵细胞One way is taking the cell from a fertilized ovum.一种方法是从受精卵中取出细胞.By day 11 the ovum begins to attach and implant in the...