Having their origins in China, chopsticks are used in many Asian countries.
筷子起源于中國,現(xiàn)在很多的亞洲國家都使用它。
It must have been a gas that could burn but that would not explode, a gas that did not smell strong, and a gas that did not kill people.
它一定是一種能夠燃燒而不能爆炸的氣體,一種味道不很強(qiáng)的而且不使人致死的氣體。