Breather valve and flame arrestor are indispensable safety devices.可见呼吸阀、阻火器是储罐不要缺少的安全设施.So the railroad will buy the spark arrestor.所以铁路将购买阻火器.The railroad will realize that it can save this $ 100 cost by investing $ 50...
早先的报道无法证实是否有幸存者。Earlier reports were unable to confirm that there were any survivors.早先的报道暗示周日可能会召开会议。Earlier reports suggested that a meeting would take place on Sunday.他的新书远不及他早先的书好.His new book is nothing like as good...