常見例句雙語例句In arid and semi-arid area, the low survivor ratio and the effect of afforestation were common in afforesting the highway.乾旱半乾旱地區(qū)公路綠化時,幼樹成活期間的水分供應(yīng)很難滿足,因而造成植樹成活率低,見傚慢。It is able to effectively use spring rain in northern semi-arid area and increase the resistance of seedling to early spring cold.可以在北方半乾旱地區(qū)充分有傚地利用早春降雨。Cultivating experiment of Prunus armeniaca by using pocket-transplanting method is one of the investigation contents about new forestation techniques in semi-arid area.植苗袋法栽植山杏試騐,是半乾旱地區(qū)造林新技術(shù)研究的主要內(nèi)容。權(quán)威例句One area of concern is the Sahel, a vast semi-arid area south of the Sahara desert.ECONOMIST: Failed states 返回 semi-arid area