He held his breath as a rat scuttled past.
见一只老鼠跑过，他屏住了呼吸。
我的猫抓了一个老鼠。
这有一只老鼠。
我有一只老鼠。
A rat could get into spaces we couldn't get to, and a rat would get out if it wasn't safe.
老鼠可以进入我们无法进入的空间，如果不安全，老鼠会逃出来。
Traditionally, a hundred samples would take lab technicians more than two days to examine, but for a rat it takes less than 20 minutes.
通常，一百个样本要花费实验技术员超过两天的时间来检测，但是一只老鼠只需要花费不到二十分钟。
A rat or pigeon might not be the obvious choice to tend to someone who is sick, but these creatures have some superior skills that could help the treatment of human diseases.
老鼠或鸽子可能并不是用来照顾病人的明智选择，但这些动物拥有更高级的技能，可以帮助治疗人类疾病。
Studies of animals, for example, have shown that when a rat experiences stress during pregnancy, it can cause epigenetic changes in a fetus that lead to behavioral problems as the rodent grows up.
例如，对动物的研究表明，老鼠在怀孕期间经历压力会导致胎儿表观遗传发生变化，进而导致啮齿动物在成长过程中出现行为问题。
If I don't send a picture, he will smell a rat.
如果我不寄张照片，他会起疑心。
Suddenly there came a rat-a-tat on the door.
突然传来了一阵梆梆的敲门声。
我觉得事情不妙。
我是卑鄙小人？
To train a rat, the experimenter placed it in an operant conditioning chamber: a small plastic box with a lever at one end.
为了训练小鼠，实验人员把它放在一个操作性条件反射室：一个一端置有操作杆的塑料箱。
The repeat patterns in the smoke made lots of people smell a rat and it turned out that Hajj had even copied some of the buildings.
烟雾中重复的样式让很多人感到可疑，结果证实，哈吉甚至复制了其中的一些建筑物。
Scientists have used the latest imaging techniques to peer inside the digestive system of a python an hour after it had eaten a rat whole.
在蟒蛇吞噬了一整只老鼠一小时之后，科学家利用最新的成像技术窥视了其体内的消化系统。
Study anti-inflammation mechanism of Plantago Asiatica L in a rat model with traumatic synovitis.
研究车前草在创伤性滑膜炎大鼠模型中的抗炎机制。
你需要一只老鼠，我说的对吧？
The little dog looks like a rat.
这只小狗看起来像只老鼠。
Oneday, I took a rat home from the lab.
有一天，我从实验室带了一只老鼠回家。
Her task was to clone a rat gene called neu.
她的任务是克隆出一个老鼠的神经鞘基因。
And... good food is... hard for a rat to find!
而且……好吃的食物……对于一只老鼠，是非常难找到的。
Modha doesn't suggest that the team has made a rat brain.
Modha否认他的团队制造一个老鼠大脑的可能性。
Fortress but a rat hole too, "said Courfeyrac with a laugh."
古费拉克笑着说：“这确是一座堡垒，但又象一只捕鼠笼。”
I don't want to say he steals them, but I really smell a rat.
虽然我不想说他偷我的书，但我确实觉得不对劲。
In a typical experiment, a rat was placed in a cage with a light.
在其中一项典型实验中，一只白老鼠被放入有一束光照射的笼子中。
Shareholders of targeted companies are also starting to smell a rat.
目标公司的股东也开始嗅到了点什么。
There are certain-- you can take a rat and put an electrode in his brain.
有某种…,可以在老鼠脑子里装一个电极。
Didn’t you smell a rat when they agreed to sell you the goods at such a price?
当他们同意把那批货以那样的价格卖给你的时候，你难道没有感到有些可疑么?
I was trying to catch a rat, but somehow he came nosing around and got in my trap.
我想逮的是耗子，可它不知怎么跑到附近，踩进了我下的夹子。
I was trying to catch a rat, but somehow he came nosing around and got in my trap.
我想逮的是耗子，可它不知怎么跑到附近，踩进了我下的夹子。
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