breeding efficiency 繁殖效能 ; 繁殖率
raise breeding efficiency 提高育种效率
improve breeding efficiency 提高育种效率
raising breeding efficiency 提高育种效率
develop breeding efficiency 提高育种效率
improving breeding efficiency 提高育种效率
can improve breeding efficiency 提高育种效率
Breeding or genetic modification could increase the efficiency with which animals and plants take up nitrogen.
育种或基因改造可以增加动植物吸收氮的效率。
In the past decades, considerable progress has been made in maize breeding for drought tolerance using conventional methods, but with low breeding efficiency due to various causes.
多年来，通过常规手段进行玉米抗旱育种取得了一定进展，但由于多方面原因，其育种效率没有得到进一步提高。
Thousands of years of selective breeding have left their mark not only on their physical appearance and efficiency, but also on their behavior.
多年的选育成千上万留下了印记，不仅他们的外表和效率，而且也对他们的行为。
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