1. Every secondary camouflage, be defeated by sadness. 每次要伪装、一次次被悲伤打败。
2. One secondary spermatocyte divides and eventually grows into two sperm cells. 一个次级精母细胞分裂并最终产生两个精子。
3. With the development of new equipment and new technology, traditional secondary circuit will be replaced by which is more scientific and more reliable. 随着新设备、新技术的不断出现，传统的二次接线将逐步被更科学、更可靠的新型接线所代替。
英英解释
n.
1. the defensive football players who line up behind the linemen
2. coil such that current is induced in it by passing a current through the primary coil adj.
1. being of second rank or importance or value; not direct or immediate
2. inferior in rank or status
3. depending on or incidental to what is original or primary
4. not of major importance
5. belonging to a lower class or rank
