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 act of propelling with force
Synonym: launch
2. the act of moving a newly built vessel into the water for the first time
3. the act of beginning something new
e.g. they looked forward to the debut of their new product line
Synonym: introductiondebutfirst appearanceunveilingentry
多通过句子记忆单词，而不是单独死记硬背。
