Logging in tropical forests is selective but the timber cutters usually prioritise the biggest and oldest trees.

砍伐热带森林是有选择性的，但伐木工人通常优先砍伐最大最古老的树木。

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We are also looking at the roles that coastal forests and trees played in protecting lives, land and infrastructure in the areas affected by the tsunami.

我们还在研究海啸灾区的沿海森林和树木在保护生命、土地和基础设施方面所发挥的作用。

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The theme addresses the role of forests and trees outside forests to help moderate soil, hydrological and aquatic systems.

本主题处理森林及森林外树木帮助调节土壤、水文以及水生系统的作用。

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It had bright green hills and deep forests where soft winds touched the trees.

VOA: special.2009.07.04

Ash trees are about 4 percent of the state's forests, and 80 percent of the state's 45 million ash trees are found west of the Connecticut River.

WSJ: Mass. creates quarantine zone to contain insect

Gibbons are at home in the high canopy of tropical forests, but they are relatively heavy and the gaps between trees are too large to travel by swinging alone.

BBC: Gibbons' extraordinary jumps 'down to technique'

The coastal strip includes beaches and chain dunes, alternating with forests, centenary pine trees, and complex lagoon systems interconnected by the water-table.

UNESCO: EDUCATION