在冬季一场雪过后，花园里的树木被雪覆盖着，地面上一片银白，惟有一些蔬菜叶子微微露出一点绿色。
After a snow in winter, the trees in the garden are covered with snow. The ground is all white with only some green leaves of vegetable sticking out from beneath.
如果它的叶子覆盖整个湖面需要48天，那么覆盖半个湖面需要多少天？
If it takes 48 days for the patch to cover the entire lake, how long would it take for the patch to cover half of it?
细毛，柔毛，例如覆盖在叶子、昆虫或婴儿的身上的细而软的毛。
A covering of fine, soft hair, as on a leaf, an insect, or a newborn child.
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