There are several reasons some mothers may not be able to breastfeed.一些母亲不能够提供母乳喂养的原因有很多.It also lets the baby breastfeed at any time.也可以在任何时候哺乳幼仔.If you are not planning on breastfeed, you have to decide on a formula.如果...
He died in unexplained circumstances.他死因不明。Soon after leaving Margate, for some unexplained reason, the train was brought to a standstill.离开马盖特不久，不知什么原因，火车突然停了下来。Soon after leaving Margate, for some unexplained reason, t...
物理学研究力学、热学 、 光学 、 声学和电学.Physics studies mechanics , heat, light, sound and electricity.这两个学生都做了不少电学实验.Both students have made quite a few experiments on electricity.从量子电动力学可以得出所有已知的电学 、 力学和化学定律.Out of quantum electrodyna...
他要有挑战性,能有一番作为的事业.He wants a career that offers a challenge.不过,近来一些事件也提醒人们注意不作为的风险.Yet there have also been recent reminders of the dangers of inaction.受托人违反信托义务可以是作为的,也可以是不作为的.A breach of trust can be active or passive....