仅仅50毫克的咖啡因就能产生药理效果。As little as 50mg of caffeine can produce pharmacological effects.凭经验估计，一杯过滤咖啡约含80毫克咖啡因。As a rule of thumb, a cup of filter coffee contains about 80mg of caffeine.每次服用大约60毫克，每天最多4次，或遵医嘱。Take approximat...
She selected a low gear and started down the track carefully.她选了低速挡小心翼翼地沿小径下行。Price quotes on selected product categories will be sent on request.所选产品类别的报价承索即寄。The sample was selected from the medical records of two gene...
Objective : To probe into relationship between female melancholia and sex hormones levels.目的: 探讨女性抑郁症与性激素水平的关系.It is also an endocrine gland secreting at least two important hormones.它也是一种内分泌腺,至少分泌二种重要的激素....hormones whi...
马克走在前面，听不见他们的声音。Mark was out of earshot, walking ahead of them.肖恩在卧室里看电视，听不见。Shaun was in the bedroom, out of earshot, watching television.她把嗓音压低到几乎听不见。She'd lowered her voice until it was barely audible....
我们将去那里，渴望献出我们的一切。We'll go there bursting to give it our all.他为全人类的利益献出了自己的一生.He has devoted his whole life to benefiting mankind.他献出了自己的生命.He rendered up his life....