In the study, researchers from Mac Ewan University in Canada trained a kind of fish called African cichlids to go to a certain area of their tank to get food.
在这项研究中，加拿大麦科文大学的研究人员训练了一种叫做非洲慈鲷的鱼，让它们游到鱼缸的特定区域获取食物。
With a full tank, you can go for miles at any chosen speed. When the gas tank is nearing empty, there is the need to drive slower to conserve gas consumption until the tank is filled again.
这就像给你的汽车加油，油箱加满时，你可以选择任何速度前进数英里，当你的油箱快没油了，你就得尽可能慢行来使你的车坚持到再次加油的时候。
Also, if you go away from your house for awhile in the spring to fall, then you should fill up the tank before you leave. It will slowly evaporate through the loop seal.
此外，如果我们在春季至秋季这一段时期要离开家一段时间，我们应当在离家前将我们太阳能热水器的水箱注满。
应用推荐