To facilitate carrying, rope or metal handles are indispensable and should be fixed to the boxes.
为便于搬运,绳子或铁把手不可缺少,并将其固定在箱子上。
They sting or bite without provocation; they fly uninvited into our rooms on summer nights, or beat ageist our lighted windows.
它们无缘无故地又叮又咬;夏天的晚上,它们未经邀请便飞到我们房间里,或者对着露出亮光的窗户乱扑乱撞。