The bat emits these ultrasonic pulses, very high pitch sound waves that we cannot hear.
蝙蝠会发出我们听不到的非常高的超声波脉冲。
他赶走了蝙蝠。
小子，抓住那只蝙蝠！
蝙蝠头部朝上。
The bat judges distance by a kind of echolocation.
蝙蝠通过一种回声定位来判断距离。
I bolted the door the instant I saw the bat.
我一看到那只蝙蝠就把门闩上了。
If you are a batboy, then you are holding the bat for the baseball players.
如果你是棒球队球童，那么你就要为棒球队员拿球棒。
In Chinese folklore the bat is a symbol of good fortune.
在中国民间传说中，蝙蝠是好运的象征。
We both liked each other right off the bat.
我们俩一见如故。
He learned right off the bat that you can't count on anything in this business.
他马上就认识到在这件事上你不能指望任何事物。
In this process of transmission and reflection, the sounds are changed, and the changes in the echoes enable the bat to perceive features of the target.
在这个传递和反射的过程中，声音发生了变化，回声的变化使蝙蝠能够感知到目标的特征。
When they stop beating their wings, they'd be much harder for the bat to distinguish from a leaf or some other object.
当它们停止拍打翅膀，蝙蝠就很难将它们与一片树叶或者其他什么东西区分开。
So the bat sends out these pulses, very focused bursts of sound, and echoes bounce back.
所以蝙蝠发出这些脉冲，一种非常集中的声波，然后回声就会反弹回来。
Anyway, as I were saying, by analyzing these echoes, the bat can determine, say, if there is wall in a cave that it needs to avoid, and how far away it is.
总之，就像我刚才讲的，通过分析这些回声，蝙蝠可以确定，比如说，洞穴里是否有需要避开的墙壁，以及它的距离有多远。
The bat judges distances by a kind of echo-location.
蝙蝠用一种回声测定法来判断距离。
La Chauve-Souris (The Bat) was a touring revue during the early 1900s.
《蝙蝠》是20年代90年代初期的一个巡回讽刺歌舞剧。
Either the squirrel thought the bat was a threat to it, or to its young if they were around, or to a food source.
或者这只松鼠认为那只蝙蝠在周围对它有威胁，或者对它的孩子有威胁，或者对食物的来源有威胁。
Why the squirrel would want to kill the bat is a mystery.
为什么这只松鼠想要杀死那只蝙蝠是一个谜。
The only animals that can truly fly are birds, insects, and one type of mammal, which is of course the bat.
真正可以飞的动物只有鸟类、昆虫还有一种哺乳动物——当然那就是蝙蝠。
The bat, holding on upside down [and so on].
蝙蝠，倒挂着[其它等等]。
Another possibility is that either the squirrel or the bat were mentally off balance.
另一种可能性是松鼠或者蝙蝠有精神方面的失衡。
Instead, right off the bat you have some stupid number and you are dragging that through the calculations.
相反，在交卷时，你得到一些愚蠢的数字，并且你还把它用在整个计算中。
And if your employer matches a certain percentage of your contributions, that's free money right off the bat.
如果你的雇主认同你一部分的贡献，那么免费的钱就会马上从天上掉下来。
The bat star is not harvested by people, so the fishing is not impacting the population.
由于人类并不捕杀蝙蝠海星，所以渔业对它们的种群没有影响。
And right off the bat you notice that I am making a huge assumption here.
在你交卷的时候，你正好注意到我在这里做了一个重要的假设。
Yet the iron intake is generally higher than what the bat needs, so it has a special process for secreting the excess.
然而，蝙蝠摄入的铁一般比实际需要量大，因此它还具有分泌过剩铁质的特殊过程。
Maybe the squirrel was going after some fruit and the bat was hanging there and the squirrel wanted to get rid of some competition.
也许这只松鼠想要吃一些水果，正好那只蝙蝠倒挂在那儿，于是松鼠想要除掉竞争对手。
Some experts thought the bat may have been frozen in place because of the cryogenic temperatures, but it changed position every now and then.
一些专家认为蝙蝠可能是因为超低温而被冻结在了外壁上，但那只蝙蝠每隔一会儿就变换一下姿势。
And if you're listening, you should know right off the bat the passengers are at home, safe.
如果你在听的话，你就应该知道乘客们现在已经回家了，很安全。
And if you're listening, you should know right off the bat the passengers are at home, safe.
如果你在听的话，你就应该知道乘客们现在已经回家了，很安全。
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