Lung cells die and are replaced about once a week.肺细胞约每周新老更替一次。Their indecision has been replaced by confidence and steely determination.他们的优柔寡断已经被自信和钢铁般的决心所取代。At last the sobs ceased, to be replaced by sniffs.最后，啜泣终于止住了...
I really must start tidying the place up...我真得开始收拾收拾这个地方了。You would be better employed tidying your room.你最好打扫一下你的房间.I really must start tidying the place up.我真得开始收拾收拾这个地方了。They were tidying up the remains of their picni...
The waiter returned with their order and Graham signed the bill.侍者把他们点的餐端了过来，格雷厄姆签了单。A formal contract is signed which is renewable annually.正式签订了每年可续签的合同。I signed in and crunched across the gravel to my room.我签到后嘎吱嘎吱走过石...
After cardiopulmonary resuscitation, he was intubated assisted with mechanical ventilation and transferred to our emergency room.心肺复苏术急救 、 气管插管接上呼吸器后送到我们急诊室.He was given mouth-to-mouth resuscitation...对他进行了口对口的人工呼吸。Despi...