Old-growth describes forests (and sometimes other plant cover) that have been growing in the same place for a very long time, rather than trees people planted more recently. Many of the trees are old, the forest floor is rich, and the whole place has had years to become complicated.

Old-growth describes形容的是 in the same place在同一個地方 for a very long time長了非常久的 forests森林（and sometimes有時也包括 other plant cover其他植被），rather than而不是 people人們 more recently近期才 planted種下的 trees樹。Many of the trees許多樹 are old年紀都大了，the forest floor林地土層 is rich豐厚，and the whole place整個地方 has had years也有了足夠的年月 to become complicated長出複雜的樣子。

People who cut trees may see it as wood to sell; people who care about wild places see it as something you cannot quickly replace. Though actually, old-growth is not a perfect scientific line — people argue about how old is old enough — but the everyday contrast is clear: this versus forest that was cut and then grew back, or trees planted in rows.

People who cut trees砍樹的人 may see it as可能把它看成 wood to sell可以賣的木材；people who care about wild places在乎荒野的人 see it as把它看成 you cannot quickly replace你無法很快補回來的 something東西。Though actually不過其實，old-growth is not不是 a perfect scientific line一條完美的科學分界——people人們 how old is old enough對「多老才算老」argue about有爭論——but the everyday contrast但日常的對比 is clear很清楚：this這個 versus對上 was cut and then grew back砍掉後又長回來的 forest森林，or trees planted in rows或種成一排排的樹。

You almost always see it before a noun: old-growth forest, old-growth trees.

You你 almost always幾乎都 before a noun在名詞前 see it看到它：old-growth forest、old-growth trees。