肺细胞约每周新老更替一次。Lung cells die and are replaced about once a week.昼夜更替.Day and night alternate.从事高等教育的人员新老更替极其缓慢。There has been very little renewal of personnel in higher education....
...Rameses II, Pharaoh of All Egypt.埃及法老拉美西斯二世And the children of Israel removed from Rameses, and pitched in Succoth.以色列人从兰塞起行, 安营在疏割.Then the sons of Israel journeyed from Rameses and camped in Succoth.民33:5以色列人从兰塞起行、安...
他们为苗床筑篱挡住北风.They fenced the seedbeds from the north wind.春天我用耧耙耘好地作好苗床.In the spring I use the rake to make a good seed bed.春季里,他们在苗床发芽并生长一年.In spring they are germinated and grown for a year in beds....
在2000年度批准的新药中有塞洛诺的Ovidrel,用于治疗女性不孕症.Among the new drugs approved in 2000 was Serono's Ovidrel for treatment of infertility in women.戒咽可改进自然生育力和不孕症治疗的成功率.Smoking cessation may improve natural fertility and success ra...