(49)
A: I want you to look at this material .
B: Is this from our last shipment ?
A: Yes ,it is .
B: I can see why you are having some problems with it .
A:我要你看看这材料!
B:这是上次叫的货吗?
A:是啊。
B:我明白为什么你用起来会有问题了。
(50)
A: I would suggest that you use this material instead of that .
B: But that costs more .
A: But you will get less waste from this .
B: We'll try it once .
A:我建议你改用这种替代那种。
B:可是那样成本较高。
A:但可以减少浪费。
B:那么就试一次看看吧。