We would like to point out that delivery before Christmas is essential and hope you can offer us that guarantee.
我们想指出圣诞节前交货很重要并希望贵方能就此向我们作出保证。
Alcohol may be a medical disinfectant, but should not be relied upon to sterilize water.
酒精可能是医学上的消毒剂,但决不可用来消毒饮用水。