Take bubonic plague for example. The disease is most commonly transmitted to humans through flea bites, and the fleas live on rodents.
以黑死病为例。这种疾病最常通过跳蚤叮咬传染给人类，跳蚤生存在啮齿类动物上。
The fleas fled far from the ferret's fur.
跳蚤从雪貂的毛皮上远远地逃脱了。
You may laugh at the fleas for their foolishness.
也许你会嘲笑跳蚤的愚蠢。
At lease Denise could sneeze and feed and freeze the fleas.
至少丹尼斯可以打喷嚏和饲料，并冻结了跳蚤。
Just like the fleas, they fail to jump higher, thinking they are doing all they can do.
就像跳蚤，他们认为自己已经尽力了，无法跳的更高。
But let's think about the question seriously, "Do we sometimes act just like the fleas"?
但认真想一想，我们有没有像跳蚤一样呢？
When you take off the lid, the fleas continue to jump, but they will not jump out of the box.
当你拿掉盖子是，跳蚤们还是不停地往上跳，然而它们不会跳出盒子。
Objective To study the community structure of the small mammals and the fleas in Xingning, Guangdong.
目的 掌握广东省兴宁市鼠形动物群落结构及寄生蚤的种类。
For sheer duplicity there is no one to beat - the British! May the fleas of a thousand camels infest their armpits!
但愿一千只骆驼上的跳蚤都寄生在英国人的腋下！
Like the fleas, what we lack is not the ability to jump out of the bottle but the confidence and courage to do so.
就像跳蚤一样，我们缺乏的并不是跳出瓶子的能力，而是跳出瓶子的信心和勇气。
Then, and it's a matter of record, you can take the top off and though the fleas continue to jump, they won't jump out of the jar.
然后，当你拿下盖子的时候，尽管它们仍在跳，但是它们不会跳出罐子。
Take bubonic plague, for example. The disease is most commonly transmitted to humans through flea bites, and the fleas live on rodents.
以黑死病为例，最常见的方式是通过跳蚤叮咬传染给人类，而跳蚤在啮齿类动物身上生存。
She wishes you gone and she desires her own ascension which requires her, like all who ascend, to throw off the fleas, so to speak.
她希望你们消失，希望她自己的扬升，像所有扬升的(星球)一样，打个比方，抛弃身上的跳蚤。
They restrict themselves and never reach their potential. Just like the fleas, they fail to jump higher, thinking they are doing all they can do.
他们限制他们自已不能发挥自己的才能，就像跳蚤一样，不能跳的更高，认为他们只能做这么多。
And bubonic plague, spread by rat fleas, is normally preceded by the death of hordes of rats (only then do the fleas opt for humans). Yet no one in 1348 recorded this.
黑死病由鼠蚤传播，在此之前通常都有大批的老鼠死亡(只有在这时跳蚤才选择人类作宿主)，但在1348年没有人记录下这些。
As you watch them jump and hit the top, you will notice something interesting. The fleas continue to jump, but they are no longer jumping high enough to hit the top.
当你观察它们跳跃并且撞到盖子的时候，你会发现一件有趣的事情，跳蚤会继续跳，但是它们不再跳到能撞到盖子的那个高度。
Many times, people do the same thing. They restrict themselves and never reach their potential. Just like the fleas, they fail to jump higher, thinking they are doing all they can do.
一些时候，人类也做同样的事情，他们约束自己从来没有达到他们能达到的能力，就像是跳蚤。
By July King Charles had fled and ill-advised instructions to eradicate all the cats and dogs in the city sent the rat population skyrocketing -- rats carried the fleas that carried the disease.
到了七月，当时的国王查尔斯二世被迫离开伦敦，临走前做出了导致瘟疫扩散更快的错误决定。他下令宰杀了城中所有的猫狗致使鼠患成灾，而老鼠身上的跳蚤正是传播瘟疫的始作俑者。
Methods:To collect living Citellus dauricus with nest, placed in the fuming-mouse tank, rats and fleas were fumed to the death in ther or petrol without exception, and then collected the fleas.
方法：收集活体达乌尔黄鼠及其窝巢，置熏鼠桶用乙醚、汽油将鼠蚤一并熏死，捡蚤；
It is transmitted between animals and humans by the bite of infected fleas, direct contact, inhalation and rarely, ingestion of infective materials.
它通过受感染跳蚤的咬伤、直接接触、吸入和极少摄入传染物在动物与人之间传播。
They infested half the nests with 60 hen fleas each.
他们往一半巢穴各放入60只鸡蚤。
And watched three-spined stickleback fish hunt water fleas, to the accompaniment of either white noise calibrated to match the noise level of speedboats or a silent track as a control.
并控制三刺鱼在跟快艇噪音程度相当的白噪声中，或者完全安静的环境之下，观察它们捕食水蚤的情况。
The disease is spread by rats and transmitted to people by fleas or, in some cases, directly by breathing.
疾病通过老鼠扩散，通过跳蚤传播到人身上，当然在有些病例中，直接通过呼吸传染。
Their first observation was that the songs of those males that had suffered fleas in early life were a third shorter than those sung by the others.
首先引起他们注意的是，那些幼年感染过寄生虫的雄鸟叫声要比其它鸟短三分之一，而且开叫也相对较迟。
Dental disease, weight issues and fleas were the most commonly diagnosed conditions for cats and dogs.
牙病、体重问题和跳蚤都是猫狗身上最常被诊断出的病况。
These are antiparasite agents (the most familiar of which is called ivermectin) that are widely used against fleas and gut worms.
这些物质是广泛使用的对付跳骚和肠虫的抗寄生虫剂。
These are antiparasite agents (the most familiar of which is called ivermectin) that are widely used against fleas and gut worms.
这些物质是广泛使用的对付跳骚和肠虫的抗寄生虫剂。
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