名词 rattlesnake:

1. pit viper with horny segments at the end of the tail that rattle when shaken

rattlevi.嘎嘎作响；喋喋不休vt.使惊惶失措；使恼火；使作响；急促地谈讲n.嘎嘎声；嘎嘎响的东西；拔浪鼓rattledadj.慌乱的；恼火的；愚蠢的动词rattle的过去式和过去分词.

1. Rattlesnakes belong to the viper family.
   响尾蛇属于蛇科。
2. Rattlesnakes occur in the warmer, drier parts of North America.
   响尾蛇出现在北美温暖干燥的地区。