原发型梅毒可在唇上产生下疳.Syhilis, in its primary form , may produce a chancre on the lips.听说下疳是一种特别难以治愈的性病.It is said that hard chancres are a kind of syphilis that is hard to cure.热带腹股沟肉芽肿的症状与某些其他性传播疾病 ( 软性下疳 、 梅毒 ) 的症状相似.The symp...
But few at the conference in London last week heeded his warning...但在上周于伦敦召开的大会上，几乎没有人留意他的警告。The window had been replaced last week during routine maintenance.上周例行维修的时候换了窗户。Leaders of some rival factions signed a peace a...
A similar system is used to contact the communications satellites that now continually encircle the earth.人们正把同样的系统用来与目前绕地球飞行的通讯卫星保持联系.She was continually adjusting the ventilation system.她不停地调节通风系统。Sarah had been plague...