每年三次应为我举行庆节。
一般情况下，男性每年会送三次让他们的另一半惊喜的礼物。
On average men treated their partners to three surprise gifts every year.
每年给家具做两到三次清洁，并彻底干燥。
Two or three times per year, clean the furniture well and dry thoroughly.
我每年去北京三次。
成员学校的校长每年开三次会议，建立一个互助的网络。
The Head Teachers meet together three times a year and provide a mutually supportive network.
战略级任务必须保持发射率每年一到三次发射。
Strategic-level missions must maintain a launch rate of one to three launches per year.
我每年去看三次外公外婆。
战略级任务必须保持发射率每年一到三次发射。 （PS：战略比战术还多？）
Strategic-level missions must maintain a launch rate of one to three launches per year.
战略级任务必须保持发射率每年一到三次发射。 （PS：战略比战术还多？）
Strategic-level missions must maintain a launch rate of one to three launches per year.
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