Adenylosuccinate lyase ( ADSL ) is a bifunctional enzyme catalyzing de novo purine synthesis and purine nucleotide recycling. 腺苷酸琥珀酸裂解酶 ( dsl ) 催化嘌呤核苷酸的从头合成与嘌呤核苷酸循环的双功能酶.
长凳的靠背可以向前翻折成一张桌子。The back of the bench folds forward to make a table.有拱形靠背的椅子a chair with an arched back椅子的靠背上搭着一件叠得整整齐齐的粉色毛衫。There was a neatly folded pink sweater on the back of the chair....
He chalked the message on the blackboard...他用粉笔将消息写在黑板上。The boys chalked out goalposts on the sports ground wall.男孩子们在运动场边的墙上用粉笔画上了球门柱.The team chalked up the ten victories against two defeats.该队赢10场输2场.Several important...