1.a series of 一连串;一系列
The students have put forward a series of questions.
学生们提出了一系列问题
2.more than 多于;超过
He supervised and trained more than 400 volunteers.
他指导和培训了400多名志愿者
3.independent of 独立于;不依赖
This emission of heat is completely independent of temperature and pressure.
这热的散发全然不受温度和压力的影响
4.vote for 选举;赞成
I was going to vote for him, but I changed my mind and voted for Reagan.
我原本准备投他的票,后来却改变了主意,把票投给了里根