Dolphins lack vocal cords, nevertheless creating sounds: a complicated system of whistles, squeaks, moans, trills, and clicks are produced by sphincter muscles inside the blowhole.
海豚没有声带，但却能发声：一个由口哨声、吱吱声、呻吟声、颤音和咔嚓声组成的复杂系统是由喷水孔内的括约肌产生的。
Bottlenose dolphins travel in social groups and communicate with each other by a complex system of squeaks and whistles.
宽吻海豚以社会群体的形式在海洋里环游，并用一种尖叫和口哨所组成的复杂系统来进行相互之间的信息交流。
The poll of 2, 000 radio listeners found tweeting, chirping and warbling was the post popular alarm call followed by church bells and balloon squeaks.
一项有近2000名收音机听众参与的投票显示，唧啾婉转的鸟鸣力压教堂钟声和气球的吱吱声成为最受欢迎的闹铃声。
Dolphins are social animals that communicate with each other through squeaks and grunts.
海豚是一种群居性动物，会通过尖叫声和呼噜声相互沟通。
Whales have a language of squeaks and clicks.
鲸用吱吱声和咔嗒声表意。
Don't ever buy a crib that squeaks or has potential to squeak.
不要买一个吱吱作响或者有可能吱吱作响的婴儿床。
The biologist says: certain bats by receiving the echoes to the squeaks they emit, can locate and steer clear of obstacles.
那位生物学家说，有些蝙蝠，借助于接受它们发出的尖叫声的回声，就能探测出障碍物的位置，并且避开这些障碍物。
That biologist says: certain bats by receiving the echoes to the squeaks they emit, can locate and steer clear of obstacles.
那位生物学家说，有些蝙蝠，借助于接受它们发出的尖叫声的回声，就能探测出障碍物的位置，并且避开这些障碍物。
For centuries, sailors have called belugas "sea canaries, " for their musical squeaks and chirps. But this beluga turned out to be less canary and more parrot.
几世纪以来，水手们一直称白鲸为“海上金丝雀”，因为它们的叫声悦耳动听。不过白鲸似乎像鹦鹉的地方更多一点。
For centuries, sailors have called belugas "sea canaries, " for their musical squeaks and chirps. But this beluga turned out to be less canary and more parrot.
几世纪以来，水手们一直称白鲸为“海上金丝雀”，因为它们的叫声悦耳动听。不过白鲸似乎像鹦鹉的地方更多一点。
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