1)double-double,两双2)two pairs of rules,两双规则3)two group-two line running,双组两线4)Double activities and two plans,双动两案5)Double Clues Two Books,双线两本6)allotertraploid(amphidiploid);amphidiploid,双两倍体
用法和例句
the article expound what"two group-two line run" is and its regulation with "two group-two line running"and the framework of the ground and the work of referee.