grazing sheep短语⁸⁴³²⁰⁺⁸ 基本例句 放牧绵羊 The rate of S biological cycling was about 0.40 in the grazing sheep system. The amount of S through feces and urinary return was as6 times as through litter decomposition. 在硫的生物循环过程中，硫的循环速率为0.40，而绵羊通过粪尿归还的硫量是植物凋落物归还量的6倍； plant-ecology