常見(jiàn)例句雙語(yǔ)例句In shrub-tree stage , the species diversity in tree layer was lower than that of shrub layer .灌喬林過(guò)渡階段群落喬木層物種多樣性指數(shù)低，而灌木層多樣性指數(shù)高。 返回 lower tree layer