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。
To answer this question, von Frisch and his coworkers set up a feeding place close to the hive.
为了回答这个问题,冯·弗里施和他的同伴在蜂箱附近建起了一个喂食点。