The exact amount is a little tricky to determine because a lot depends on how honest a person is about how many cigarettes he or she smoked per day.
还没有确切数据，很多人不能如实回答他或她每天吸多少烟。
The exact amount is a little tricky to determine because a lot depends on how honest a person is about how many cigarettes he or she smoked per day.
还没有确切数据，很多人不能如实回答他或她每天吸多少烟。
应用推荐