您要查找的是不是：
- triple crops per year 三熟
- On the contrary, the double cropping rice followed by a cool-loving crop per year and the double cropping rice followed by a thermophilous crop per year are potential carbon sources. 而双季稻连作喜温作物和单(双)季稻连作喜凉作物生态系统起着较稳定的碳源作用.
- We fail one student per year on average. 我们平均每年有一个学生不及格。
- Technique for highly effective ecological raising of the shrimp Penaeus vannamei Boone to produce two crops per year in freshwater 南美白对虾淡水双茬生态高效养殖技术
- The vessel tax of anchorage is 5,000 dollars per year. 这艘船的停泊税一年是五千美元。
- Interest is paid at the rate of 6 percent per year. 每年的利率是百分之六。
- You can enjoy six weeks holiday per year. 你一年有六周的假期。
- Lawyers in Italy average 150,000 Euros per year. 在意大利，律师平均年收入为15万欧元。
- The population is increasing at about 6% per year. 人口以每年约 6%25 的速度增加。
- How many times per year do you travel? 每年您旅行几次?
- Scientists at the agroforestry center say the use of fertilizer trees can reduce the need for chemical nitrogen by up to three-fourths.And they say it can double or triple crop production. 农地林业中心的科学家称，使用肥料树木可以将对化学氮素的需求减少四分之三，还可以将土地产量提高两到三倍。
- If yes, how much is the subscription fee per year? 如是,大约多少订阅费一年?
- You can enjoy three weeks holiday per year. 你一年有三周的假期。
- At least 1 practice for disaster rescuing per year. 每年必须至少组织1次矿井救灾演习。
- The premium is 150 dollars per year. 保险费每年150美元。
- My property was rated at 200 dollars per year. 我的财产估计每年缴税200美元。
- The IETF holds meetings three times per year. IETF每年举行三次会议。
- Medibank first choice extra $160 per year. 包含%24200眼睛，%24300牙齿,另外包含一年两次免费洗牙!
- Wwe fail one student per year on average. 我们平均每年有一个学生不及格。
- Four cropping per year high-efficient interplanting cultivation technique for open field vegetables 露地蔬菜一年四熟高效套作栽培技术
