点击下方单词,选择对的这个单词
点击下面链接下载与本句相关的学习资源,包括PDF教材和音频练习,方便课后复习:
1. the trait of being activemoving or acting rapidly and energetically
e.g. the level of activity declines with age
Synonym: activity
2. the state of being active
e.g. his sphere of activityhe is out of action
Synonym: actionactivity
多通过句子记忆单词,而不是单独死记硬背。