地道英语对话：Checking Smoke Detectors(4)

A: Hi, this is Betty.
B: Hi, Betty. It's Larry. I need to know how many smoke detectors¹ are in your apartment.
A: There was one when I moved in. Then I added one.
B: Do both detectors have fresh batteries?
A: I always keep them fresh. I don't want to burn to death.
B: That's good. I have to come by there and check out all of the detectors.
A: Not a problem. When will you be here?
B: I'll be letting myself into all the apartments on Thursday at noon.
A: If it's raining, make sure you wipe your feet before you come inside, okay?
B: Not to worry. I'll be in and out of your place in a flash.
 

1 detectors   

探测器( detector的名词复数 )

参考例句：

• The report advocated that all buildings be fitted with smoke detectors. 报告主张所有的建筑物都应安装烟火探测器。
• This is heady wine for experimenters using these neutrino detectors. 对于使用中微子探测器的实验工作者，这是令人兴奋的美酒。 来自英汉非文学 - 科技