provitamin A

同根派生

Choosing varieties that have this mutated gene can provide on average three-fold higher levels of provitamin A, the researchers said.
研究人员表示:从含有这个突变基因的品种中选择能提供平均3倍更高水平的维他命原A.
It‘s still founded that peas contains ample provitamin A which can convert into vitamin A in the body and thus in turn keep the skin replenished with moisture.
现代研究更是发现，豌豆含有丰富的维生素A原，维生素A原可在体内转化为维生素A，起到润泽皮肤的作用。
A common existing technique for assessing the provitamin A content of corn varieties can be prohibitively expensive for plant breeders, the researchers said, but the new one is vastly less expensive.
研究人员表示:对于植物育种来说;用现有通用的技术对玉米品种中的维他命原A含量进行评估是过于昂贵的.;而新方法却是大大地便宜了
There is a vein of melancholy in his character.
他的性格中有少许忧郁的气质。
There was a long lag in forwarding mail to us.
转寄给我们的邮件晚了很久才拿到。