That's what we'll call it, the nutrient cycle of mangrove litter.

这就是我们所说的，红树林凋落物的营养循环。

Deciduous means that the trees' leaves turn different colors and fall off each year.

落叶指树木的叶子会变成不同的颜色，并且每年都会凋落。

In some tropical forests, the trees' leaves will fall off in the dry season just like deciduous forests.

在一些热带森林中，树木的叶子在旱会像落叶林一样凋落。

Just like the leaves falling every autumn, the trunks themselves return to the soil to feed the next generation.

就像是每年秋天凋落的叶子，树干再回到土壤中继续养育下一代。

How many leaves has the tree grown and lost in its life?

这棵树一生中长出和凋落的叶子有多少片呢？

Like the leaves fall and there's sparseness and a harshness to it.

就像树叶凋落，留下稀酷之感。

How beautiful when the rose petals fall away and you've got the rose hips.

玫瑰花瓣凋落，露出玫瑰果时，那景象多么美丽。

The boughs were scattered like shed petals.

树枝散落，如同凋落的花瓣。

Dead leaves floated on the surface of the water.

【surface】凋落的树叶漂浮在水面。

They are formed in the preceding year, a little while before the leaves begin to fall; and as they form, they loosen the old leaves, and soon push them off.

它们在前一年就已经形成，就是在树叶凋落之前的一小段时间形成；它们形成后就会松开老叶子，然后将它们挤掉。

" Fall colors" refer to the leaves on the trees that in many parts of the country – in the U.S. – change colors in the fall as the leaves begin to die and fall to the ground during winter.

指的是树木上的叶子， 在美国的许多地区， 秋天时叶子开始变色并逐渐凋落， 到了冬天就会掉到地上。