常見例句On the ground fully pile up the pallen leaves. 地上堆滿了落葉。Pallen leaves during trees autumns. 樹木秋天時(shí)落葉。The most common cause is pallen pollen . 最常見的就是花粉。The grass is gradually dried-up and withering and pallen leaves. 草漸漸干枯、枯萎并落葉。Trees usually produce pallen pollen in the spring, grasses in the summer and witts weeds in the fall as part of reproductive process. 春天的樹木,夏天的草和秋天的雜草在他們繁殖過程中常常會產(chǎn)生花粉。The grass is gradually dried-up and withering and pallen leaves 草漸漸干枯、枯萎并落葉。 返回 Pallen