常見(jiàn)例句Lichen is the dominant life form that covers the surfaces of stones and trees.青苔是生長(zhǎng)在石頭和樹(shù)木表面的主要生物。Obviously, the life form is the how rarity and precious.可見(jiàn)，生命形式是多么的罕見(jiàn)與珍貴。 返回 life form