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- Mr. Smith gave a lesson on how to improve soil . 史密斯先生講了一堂如何改良土壤的課。
- He gave a lesson on how to improve soil. 他講了一堂如何改良土壤的課。
- He studied how to improve soil condition. 他研究如何改良土壤。
- He studied how to improve soil conditions. 他研究怎樣改善土壤條件。
- Mr. Smith gave a lesson on how to improve soil. 史密斯先生講了一堂如何改良土壤的課。
- Drugs can also artificially improve athletic performance,but it is cheating. 藥品還可以使運動員以不正當手段提高運動成績，但這是欺騙。
- An artificial waterway or artificially improved river used for travel, shipping, or irrigation. 運河,溝渠:人工水道或人工修繕的河流,用於旅行、航運或灌溉。
- It is showed that the sodication was the serious, the less aggregate of soil was, but that in improved soil increased obviously. 這說明土壤鹼化程度越大，團粒結構越少；改良後土壤的團粒結構明顯增加。
- The professor studied how to improve soil conditions. 這位教授研究如何改良土壤狀況。
- A green manure is a crop grown mainly to improve soil fertility. 種植綠肥作物主要是為使土壤更加肥沃。
- Drugs in the sense of "dope" taken to artificially improve athletic performance. 興奮劑可以使運動員以不正當於手段提高運動成績。
- Wow. So this stuff could help feed people and improve soil. 哇，看來這種物質能夠提高產量，還能改善土壤。
- A mixture of decaying organic matter, as from leaves and manure, used to improve soil structure and provide nutrients. 堆肥腐爛有機體的混合物，如樹葉或糞便，用來改善土壤結構並增加土壤養分
- The improved soil aeration also accelerated the transportation of (superscript 14)C-photosynthates from leaves to root tubers, increased the ratio of root tuber dry weight to top dry weight. 促進(上標14)C同化物由葉片向塊根的運轉和分配，提高幹物質在塊根中的分配率；
- West Indian forage plant cultivated in southern United States as forage and to improve soil. 在美國南部栽培的一種西印度的飼料植物，也用於改善土壤質量。
- Soak of billabong broken bits makes straw fertilizer improved soil, improve wholesome ambient conditions, gained benefit of good economy, zoology, society. 沼渣漚制秸稈肥改良土壤,改善衛生環境條件,取得了良好的經濟、生態、社會效益。
- Rational soil fertilization could improve soil nutrition and leaves nutritious level. 本實驗的施肥試驗表明，合理的土壤施肥可以提高土壤營養和葉片營養水平。
- The artificial improvement of drainage could soon lead to a marked loss in nutrients. 採用人工排水措施可以迅速導致養分含量顯著降低。
- Mechanism and Measures for Improving Soil in Alkalisaline Land by use of Tamarix chinensis Lour. 利用檉柳改良鹽鹼地土壤的機制與措施初報。
- Robinia pseudoacacia is the best tree kind to improve soil of re-vegetation in the coal waste piles. 在同一植被恢復過的矸石山上刺槐林對土壤的改良作用最好。
