Cigarette smoking is a major factor contributing to cancer.
Cigarette smoking is a major factor contributing to cancer.
Cigarette smoking is a major factor____to cancer.  
Smoking is a major factor contribute to cancer.请分析一下这个句子.
A major factor contributing to voltage instability is the vo
Senator Henry Jackson says that a major factor contributing
英语翻译1.speed is a major factor in many accidents.2.driving to
What brother is smoking is not a cigarette,but loneliness!
CIGARETTE SMOKING IS DANGEROUS TO YOUR HEALTH是什么意思
Smoking a cigarette 中文意思
1.Smoking can lead to lung cancer.
Does smoking lead to lung cancer?
英语翻译Speed is a major factor in many accidents.Driving too fa