Thousands of frogs croaked in the reeds by the riverbank.
成千上万只青蛙在河岸的芦苇中呱呱地叫。
这些青蛙生活在树上。
Then, all the frogs hopped sadly away.
然后，所有的青蛙悲伤地跳走了。
她喜欢青蛙。
Some animals such as bears, frogs and snakes, sleep all winter.
有些动物整个冬天都在睡觉，如熊、青蛙和蛇。
All he does is to sit in the water with the other frogs, and croak.
他所做的就是蹲在水潭里，和其他青蛙一起呱呱叫。
On the way he passed by a marsh, in which a number of frogs were sitting croaking.
在路上，他经过一片沼泽地，那里有许多青蛙坐在那里呱呱叫。
Right, bigger frogs have deeper voices, so if a smaller frog can imitate that deep voice.
是的，大青蛙的声音更低沉，所以如果小青蛙能模仿那种低沉的声音。
The two frogs ignored the comments and tried to jump up out of the pit with all their might.
两只青蛙没有听这些话，用尽全力想跳出坑外。
The leg action of the breaststroke may have originated by imitating the swimming action of frogs.
蛙泳的腿部动作可能是模仿青蛙的游泳动作而来。
Large carnivorous plants in some hot and wet areas have been known to capture rats, birds, and frogs.
在一些湿热地带，大型食肉植物能够捕捉老鼠、鸟类和青蛙。
Snake expert Robert Henderson, from the Milwaukee Museum of Natural History, said, "Worldwide, new species of frogs are being discovered and described quite regularly."
密尔沃基自然历史博物馆的蛇类专家罗伯特·亨德森说：“在世界范围内，人们经常发现和描述新的青蛙种类。”
Commenting on the find, snake expert Robert Henderson, from the Milwaukee Museum of Natural History, said, "Worldwide, new species of frogs are being discovered and described quite regularly."
密尔沃基自然历史博物馆的蛇类专家罗伯特·亨德森对这个发现评价称：“在世界范围内，人们经常会发现和描述新种类的青蛙。”
The other frogs kept saying that they were sure to die.
其他的青蛙一直在说，它们肯定会死。
When frogs are not in water, their bodies can take air through their skin.
当青蛙不在水里时，它们的身体可以通过皮肤吸收空气。
Two frogs lived together in a marsh.
两只青蛙住在沼泽里。
蝌蚪能长成蛙。
We observed the circulation of blood in frogs.
我们观察了青蛙的血液循环。
One astonishing morning, we had a visitation of frogs.
一个特别的早晨我们邂逅了一群青蛙。
I eat insects, worms, frogs, snakes, mice and bird eggs.
我吃昆虫、蠕虫、青蛙、蛇、老鼠和鸟蛋。
One of the world's tiniest frogs has been discovered in Borneo.
世界上最小的一种青蛙之一在婆罗洲被发现。
The first cloning experiments in the 1950s involved frogs and toads.
克隆实验开始于20世纪50年代，对象为青蛙和蟾蜍。
The gavel has a frog's head as frogs symbolize change in Japanese culture.
这把木槌上有一个青蛙头雕饰，因为在日本文化中青蛙象征着改变。
Small frogs rained on a town in Serbia, sending residents running for cover.
塞尔维亚的一个城镇下起了青蛙雨，当地居民们不得不四处乱窜寻找掩护。
Because the volunteers who count frogs by their sounds may be overestimating.
因为通过蛙鸣来统计青蛙数量的志愿者很可能会把数字估计的高了。
Volunteers listen for frogs, identify the species, and give population estimates.
那里的统计员通过听青蛙的叫声来辨别青蛙的种类，然后给出数量的估计。
Volunteers listen for frogs, identify the species, and give population estimates.
那里的统计员通过听青蛙的叫声来辨别青蛙的种类，然后给出数量的估计。
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