average or mean shipped and landed quality terms

例句：

1. 1. The average salary for a software engineer is $70,000 per year.
   软件工程师的平均年薪是7万美元。
2. 2. The team's performance was below average in the competition.
   团队的表现在比赛中低于平均水平。
3. 3. The book is an average read, with little to recommend it.
   这本书是一本平庸的书，没有什么值得推荐的地方。