癌的正确疗法成了无止境的议论.The correct treatment of cancer is a matter for almost endless debates.不育妇女患乳癌的倾向性较高.Infertile women have a somewhat higher risk of developing breast cancer.乳癌的发生在青春期后10年内即已决定.The setting for breast cancer...
The effects of weathering can be simulated in the laboratory.在实验室里可以模拟各种天气产生的影响.This suggests that the optimum for biological weathering would be in a hot, moist climate.这表明生物风化最适宜的条件是湿热气候。The movement of water is also a...