My new video game player came with three game cartridges included.我的新电子游戏机附有三盘游戏带.The problem with video game is that they're addictive.电子游戏机的问题在于它们会使人上瘾.This video game machine has broken down.这台游戏机坏了....
The amoeba is a very simple organism.变形虫是很简单的生物体.It was an infectious organism that he studied.他研究的是一种可传染病菌的微生物.Genetic engineers transpose or exchange bits of hereditary material from one organism to the next.遗传工程师将某一生物...
A pair of teenage boys were smoking cigarettes...两个十来岁的男孩正在吸烟。Most pregnant women remain off cigarettes while carrying the child.大多数孕妇都在孕期戒了烟。The risk of developing heart disease increases with the number of cigarettes s...