以微弱负电流刺激疼得最厉害的部位。Stimulate the site of greatest pain with a small negative current.直到昨天傍晚6点40分，马丁微弱的呼救声才被人听到。Martin's weak cries for help went unheard until 6.40pm yesterday.他停下脚步试着让眼睛适应微弱的星光。He stopped to try to ad...
Oral contraceptives are readily available.口服避孕药容易得到.Some barrier contraceptives also help to protect against sexually transmitted infections.有些屏障避孕还有助于预防性传播疾病.Continuous Oral Contraceptives: Are Bleeding Patterns Depende...
He studied the cards, each with its different numerals.他仔细看了看牌, 每张牌上的数字都不相同.A table comparing numerals in two different numeral systems.一种可以比较两种不同数制中的数字的表格.He learned to write the numerals before he went to school.他在上学前学...