When he returned to the canopy tree his cheeks were flushed and he looked triumphant.

当他回到树冠树时，他的脸颊通红，一副得意洋洋的样子。

And with development, trees get taken down and little ones get put up, and so we're constantly in a battle of trying to maintain the tree canopy.

随着发展，树木会被砍倒，小树会长出来，所以我们一直在努力维护树冠。

A massive oak claims its ground for 200 years or more, outcompeting all other would-be canopy trees by casting a dense shade and drawing up any free water in the soil.

一颗巨大的橡树占据它的领地长达200年甚至更久，通过制造浓密的树荫和吸收土壤中任何多余水分驱逐所有可能的冠层树木。