如果使用得当,避孕套是很有效的避孕手段。Condoms are an effective method of birth control if used with care.服务项目包括避孕建议和健康检查,并且免费提供。The service covers contraceptive advice and health checks, and is available free.服用避孕药是最有效的避孕方法。The pill is th...
When John was 17, he died of congenital heart disease.约翰17岁时死于先天性心脏病。a congenital inability to tell the truth生就的不会说实话He has a congenital heart defect.他有先天性心脏缺陷....