Why is the third hand on the watch called a second hand?
手表上的第三只针为什么叫做秒针(第二只针)？
According to a study, a large number of people, particularly smokers, have no idea that the third-hand smoke is a health hazard for people.
据研究，许多人，尤其是烟民，都不知道三手烟会危害人们的健康。
According to a study, a large number of people, particularly smokers, have no idea that the third-hand smoke is a health hazard for people.
据研究，许多人，尤其是烟民，都不知道三手烟会危害人们的健康。
应用推荐