The cylinder valve should be turned off when not in use to avoid the regulator being left on the open cylinder for a prolonged period 在不使用氧气樽时，应关闭其活门，以免调节器停留在开启的氧气樽上过
2.
For the safety of you and other person in performing experiment . please note the name of the reagent and warning label attached on the reagent bottle 为了你及其他人做实验时的安全，请注意试剂樽上的名称及警告标贴。
3.
I no longer drink pepsi or dr . pepper since the people who make these products are atheists who refuse to put " under god " on their cans 我不再饮用百仕或dr . pepper汽水?因为这些制做商是无神主意论者?他们不肯把"神的眷顾下"字样印在汽水樽上。
