閱讀下面的短文，將劃線(xiàn)部分譯成英文或中文。
    Can dolphins talk？Maybe they can't talk with words，but they talk with sounds （聲音）.（1）They show their feelings with sounds. Dolphins travel in a group.We call a group of fish a "school".They don't study，but they travel together.Dolphins talk to the other dolphins in the school.jye.ai give information.They tell each other when they are happy or sad or afraid.（2）They say "welcome" excitedly when a dolphin comes back. They talk when they play.They make a few sounds above water.They make many more sounds under water.（3）人們聽(tīng)不到這些聲音，因?yàn)樗鼈兎浅８摺?/bdo> Scientists make tapes of the sounds and study them.
Sometimes people catch a dolphin for a large aquarium （水族館）.People can watch the dolphins in a show.Dolphins don't like to be away from their school in an aquarium.They are sad and lonely.（4）世界上有很多關(guān)于海豚的故事。They help people.Sometimes they save somebody's life.Dolphin meat is good，but people don't like to kill them.（5） They say that dolphins bring good luck. Many people believe this.

（1）

它們用聲音表達(dá)自己的感情。

它們用聲音表達(dá)自己的感情。

（2）

當(dāng)一只海豚回來(lái)時(shí)，它們興奮地說(shuō)"歡迎"。

當(dāng)一只海豚回來(lái)時(shí)，它們興奮地說(shuō)"歡迎"。

（3）

People cannot hear these sounds because they are very high.

People cannot hear these sounds because they are very high.

（4）

There are many stories about dolphins in the world.

There are many stories about dolphins in the world.

（5）

據(jù)說(shuō)海豚會(huì)帶來(lái)好運(yùn)。

據(jù)說(shuō)海豚會(huì)帶來(lái)好運(yùn)。