oven可数还是不可数

　　They baked potatoes in the oven.

　　他们用烤箱烤土豆。

　　The meat is roasting in the oven.

　　肉在烤炉里烤着。

　　I made and baked bread in my oven.

　　我在烤箱里烤了面包。

　　You can't cook bacon and eggs in the oven!

　　你不能用烤箱做培根和鸡蛋！

　　She crept up and thrust her head into the oven.

　　她爬起来，把头塞进烤箱。