In order to collect the venom, he has to find rattlesnakes in the western part of the United States.

为了收集蛇毒，他必须在美国西部找到响尾蛇。

youdao

In order to collect the venom, he has to find rattlesnakes in the western part of the United States.

为了收集蛇毒，他必须在美国西部找到响尾蛇。

youdao