这所房子寂静无声,只听见树枝刮擦着石板瓦吱吱作响.The house was silent but for the scraping of a branch on the slates.这时后院走廊上传来一阵刮擦的声音.There was a scraping noise on the back porch.不管容器什么材料,刮擦器全部采用316L不锈钢或者铜镍合金.All SS 316 L or Monel construction ...
Smoking could lead to irregular heartbeats.吸烟会引起心律失常。Doctors also treat irregular heartbeats with another device called a pacemaker.医生还会使用另外一种称为“心脏起搏器”的设备来治疗心律不齐.A sad and lonely tune. There's only piano and heartbe...