When my beggarly heart sits crouched.当我乞丐似的心,蹲闭在屋角的时候.It'stood crouched, with tail between its legs, like a miserable and woe - begone dog.它夹着尾巴蹲在那儿, 好像一条可怜的倒楣的狗.They crouched there, clutching the hatchway.他们三个紧紧抓住天...
The most commonly used plant cell wall hydrolytic enzymes have pectinase, cellulase and hemicellulase enzymes.水解植物细胞壁最常用的酶有果胶酶 、 纤维素酶和半纤维素酶.Linen fabrics are treated by composite enzyme ( pectinase and cellulase ).以复合酶 (...