一到夏天，别管是沟里、渠里，还是河里、水库里，有水的地方就有蛤蟆。
O O B-Time I-Time O O O O B-Location I-Location O B-Location I-Location O O O B-Location I-Location O B-Location I-Location I-Location O O B-Thing O B-Location I-Location O O B-Thing I-Thing O