Laser beams may cauterize and heal ulcers.激光束可以烧灼和愈合溃疡.Lasers cauterize incisions , reducing bleeding and infection, sealing off nerve endings, and minimizing postoperative pain.激光可以麻痹伤口, 减少流血和感染, 封闭神经末梢, 将术后痛苦降低至最小....
The only thing to do was knuckle down and get on with some serious hard work.唯一能做的就是开始努力工作，好好干出点儿成绩来。It is arguable whether the rebels will knuckle under.还不能确定反叛者是否会投降。David Seaman was back in the Arsenal goal after brea...
Do exercise every day and you'll be back in condition.每天锻炼锻炼,你很快会恢复健康的.You'd better get up early to do exercise.你最好早点起床锻炼身体.If he didn't do exercise every day, he wouldn't be so strong.如果他不每天锻炼, 他不会那样...