地道英语对话：Checking Smoke Detectors(1)

A: Hello, this is Betty.
B: Hi, Betty. Larry here. How many smoke detectors¹ are in your apartment?
A: Actually, I have two.
B: Are the batteries² fresh?
A: Both batteries are good.
B: Great. I need to come by and check them myself.
A: No problem, when are you coming by?
B: Thursday at noon. I'll let myself in if you're not there.
A: Okay, remember to lock my door when you leave.
B: I'll be in and out of there in just a few minutes.
 

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

2 batteries   

n.电池；（蓄）电池（组）( battery的名词复数 )；一系列；排炮；层架式鸡笼

参考例句：

• to replace the batteries 更换电池
• He is certain that this TV set will operate on batteries. 他肯定这个电视机可以用电池。 来自《简明英汉词典》