They get caught in trees (hence the epithet "Witches' Knickers"), take hundreds of years to decompose and push up demand for oil, used to make plastics.

它们挂在枝头（由此而得“巫婆的灯笼裤”之名），需要数百年才能分解，它们助长石油需求，正是石油用于制造塑料。

youdao

Over the past 38 years, he has planted trees on a sandbar of the Brahmaputra River and has turned it into a forest.

38年来，他在雅鲁藏布江的一个沙洲上植树造林，把那里变成了一片森林。

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People in this city have planted lots of trees in the last few years.

在过去的几年里，这个城市的人们种了很多树。

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After about five years, cacao trees start producing large fruits called pods, which grow near the trunk of the tree.

VOA: special.2010.02.17

Over the years, an agricultural adviser named Tony Rinaudo has helped people in the Sahel learn about the value and care of trees.

VOA: special.2011.05.10

Buckley isn't an archaeologist. He studies tree rings, which record the growth history of trees that can be hundreds of years old, or even older.

VOA: standard.2010.04.05

The Lord's Acre appears to have remained an orchard and kitchen garden to the castle's occupants for around 350 years, and many of the fruit trees there date from between 1300 and 1600.

BBC: Bid to transform historic Lord's Garden in Ruthin

Trees in the woods were descendants of the first trees to grow in Scotland after the glaciers receded thousands of years ago and support hundreds of other species, it added.

BBC: Assynt red deer cull defended by John Muir Trust

Thus a recent U.N. report predicts that 98 percent of Indonesia's natural rainforest will be degraded or lost within the next 15 years, in large part because of the planting of palm trees for the production of the biofuel palm oil.

CNN: Biofuel: Green savior or red herring?