n. the defensive football players who line up behind the linemen
a. being of second rank or importance or value; not direct or immediate
s. depending on or incidental to what is original or primary
s. not of major importance
a. 中级的, 中等的, 次要的, 第二的, 从属的, 辅助的
[化] 仲(指CH-3...CH(CH-3)-型支链烃基或指二元胺及R-2CHOH型的醇); 第二
1. The secondary school offers many extracurricular activities.
中学提供许多课外活动。
2. Her secondary goal is to improve her English skills.
她的第二个目标是提高她的英语技能。
3. The secondary effects of the medicine are listed on the label.
药物的副作用在标签上列出了。