例句與造句

1. in these chloroplasts carbon dioxide combines with phosphoenolpyruvate to form oxaloacetic acid, which is transported to the bundle sheath cells, where the carbon dioxide is released, then fixed by the enzyme ribulose bisphosphate carboxylase to form glycerate 3-phosphate, the first step in the calvin cycle
   在葉肉細(xì)胞的葉綠體中二氧化碳與磷酸烯醇丙酮酸結(jié)合形成草酰乙酸，后被運(yùn)到鄰近的維管束鞘細(xì)胞，在那里二氧化碳被釋放，后被核酮糖二磷酸羧化酶固定形成3磷酸甘油酸，這是卡爾文的循環(huán)第一步。
2. It's difficult to find bundle sheath cell in a sentence. 用bundle sheath cell造句挺難的