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- 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。
- area of double of triple cropping 复种面积
- Rice is the chief crop in most southern provinces. 稻子是大多数南方省份的主要作物。
- The grain crop has gone down this year. 今年的粮食作物产量下降了。
- We have had the biggest wheat crop ever this year. 今年我们的小麦收获量是有史以来最好的。
- He received triple pay for his extra work. 他因超额工作得到三倍的报酬。
- Half the fruit crop froze out in the sudden cold. 一半的水果作物在突如其来的寒流中被冻死。
- A vein of gold was seen cropping out. 可以看见一条金矿矿脉露出地面。
- Rice is the chief crop in this ares. 稻子是这一地区的主要作物。
- We had a poor crop of raspberries this year. 今年我们的悬钩子歉收。
- The farmer paid 3 laborers to gather the crop. 农场主雇佣3名工人收割庄稼。
- Composed of three parts; threefold; triple. 三倍的，三重的，三部分的由三部分组成的，三重的
- Part of every crop is saved for seed. 每一种庄稼都留一部分作种子。
- His shot beat the goalkeeper neck and crop. 守门员根本挡不住他射门。
- He fell neck and crop off the horse. 他从马上倒栽葱地摔了下来。
- The farmer paid 3 labourers to gather the crop. 农场主雇佣3名工人收割庄稼。
- An animated Spanish or Spanish-American dance in triple time. 方丹果舞一种三拍西班牙或西班牙－美国人跳的舞蹈
- Bad weather is responsible for the poor crop. 坏天气是收成不好的原因。
- Too much rain accounted for the poor crop. 太多的雨水导致庄稼歉收。
- Oats is a crop grown mainly in cold climates. 燕麦主要是在气候凉爽地区种植的庄稼。
