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...
Dr Lopes'work will be at an exhibition opening at the RCA in London today.洛佩斯博士的工作成果将于今天在伦敦开幕的皇家艺术学院展览会上展出.Alleyways wind through the city like a maze, opening up into surprising, sunny fountained piazzas.小巷子像迷宫一般蜿蜒...
The offspring contain a mixture of the genetic blueprint of each parent.子女身上遗传了父母双方的基因型板。These compounds bind with genetic material in the liver.这些化合物在肝脏中与遗传物质实现结合。The whole population is so inbred that no genetic differ...
Tin dents more easily than steel.锡比钢容易变瘪.He hammered out the dents in the metal sheet.他把金属板上的一些凹痕敲掉了.I hated to put any dents in his enthusiasm, but I was trying to be realistic.我不想打击他的热情，只是试图现实一些。After a while that sort...