His research work was attacked by animal rights activists.

　　他的研究受到了動(dòng)物權(quán)益維護(hù)者的抨擊。

　　A reward was offered for the animal's safe return.

　　懸賞要求將動(dòng)物安全送還。

　　She finally agreed to have the wretched animal put down.

　　她最后同意用藥結(jié)束這頭可憐的動(dòng)物的生命。

　　This animal is found in Australia, and nowhere else.

　　這種動(dòng)物生長(zhǎng)在澳大利亞，別處沒有。

　　Each animal was tagged with a number for identification.

　　每只動(dòng)物都系上了標(biāo)有號(hào)碼的小牌，以便辨認(rèn)。