What Dr Rodriguez Martin reckons is going on is that trees are using their bark, which they shed continually, as a waste-disposalsystem.
罗德里格斯·马丁博士认为是这么回事：树木将其不断脱落树皮当做一种废物处理系统。
2
With a water purification plant and wastedisposalsystem, the crew of the Yamal say the ship's own ecological impact is minimal.
这艘破冰船拥有一个净水装置和垃圾处理系统，它的船员称这艘船自己对生态系统的影响是很小的。
3
There are stacks of bottled water, and an irrigation system on the opposite side of the food line: it’s part of the compost and wastedisposalsystem set up by a group called Mobile Design Lab.