21.Regular will be fine.

21.一般尺寸的就好。
22.When can I get my pictures?
22.我什么时候可以拿相片。
23.Do you have batteries?
23.你们卖不卖电池？
24.I need batteries like this.
24.我要像这样的电池。
25.I'm looking for a camera.
25.我想买相机。
26.What type of camera are you looking for?
26.您想买什么样的相机？
27.Is this a digital camera?
27.这台是数字相机吗？
28.What functions does this model have?
28.这一款相机有什么功能？
29.Is there any difference between these two camera models?
29.这两款相机有什么不同？
30.How many pixels does this camera have?
30.这台相机的像素是多少？

31.Does this camera focus automatically?
31.这台相机是自动对焦吗？
32.Could I give them a try?
32.我可以试一下吗？
33.What is this button?
33.这个按钮是做什么用的？
34.It is very user-friendly.
34.这台非常好操作。
35.What kind is the most durable?
35.哪一种最耐用？
36.Can the lens take wide angle shots?
36.这个镜头有广角功能吗？
37.Can I change the lenses?
37.可以换镜头吗？
38.What is the capacity of the memory card?
38.记忆卡的容量是多少？
39.Something is wrong with my camera.
39.我的相机有点问题。
40.I can't release the shutter.
40.快门按不下去？
41.How much do I have to pay for the repair?
41.修理这个要多少钱？