They have heavy and straight tree trunks.

牠们有又重又直的树干。

Why are there plants and flowers growing on the trunks of these trees?

为什么这些树的树干上长着花草呢?

This clump of paper birch trunks was backlit by a blaze of reds and yellows.

这一丛纸桦树树干的背光是一片红黄相间的火焰。

It was fine, coming through the snow as the red sun was rising and showing against the black tree-trunks!

从雪地里钻出来的时候，红日冉冉升起，映着黑黝黝的树干，天气真不错！

Their trunks are as gnarled as bonsai. Long faintly glowing tendrils hang straight down in pastel curtains.

它们的树干盘根错杂，仿佛盆景一般。它们长长的卷须如帘子般垂下，发出轻柔的微光。