...grainy black and white photos.模糊不清的黑白照片She grabs a stack of baby photos and thrusts them into my hands.她抓起一沓婴儿照片塞到我手里。There are many old photos hanging up in the room.屋里挂着许多旧照片。She knew she was taking a big liberty in...
Homoserine has also been implicated in the biosynthesis of methionine.同型丝氨酸也牵涉到蛋氨酸的生物合成.Cottonseed meal is deficient in lysine, methionine and leucine.?澍宸廴狈?蛋彼幔0蛋氨酸和亮氨酸.The article discussed the effects of zinc methionin...