英汉双语例句-生物医药大词典

Since 1990s of last century, China has fulfilled the transformation from unfavorable balance of trade into favorable balance of trade.

中文意思：
摘要20世纪90年代以来，我国实现了由贸易逆差向贸易顺差的转变。

以下为相关句子列表(点击查看，可以看对应的解释）：

	Since 1990's, because of recent recognition of potential global-scale interactions among climate, surface processes, tectonics, needs of engineering constructions and critical land-use decisions the theoretical problems of bedrock channel fluvial incision			自20世纪90年代以来，由于对全球尺度的气候、地表过程和构造之间相互作用的认识，以及工程建设和天然资源管理决策的需要，流水下切成为构造地貌学的理论研究前缘。
	Since 1990, 2 randomized trials and seeral obserational studies hae ealuated the benefits s risks of expectant management of seere preeclampsia at <34 weeks of gestation.			自1990年以来，2个随机试验和一些观察性研究评价了对于妊娠小于34周的重度先兆子痫采用保守治疗的利与弊。
	Since 1990, 2 randomized trials and several observational studies have evaluated the benefits vs risks of expectant management of severe preeclampsia at <34 weeks of gestation.			自1990年以来，2个随机试验和一些观察性研究评价了对于妊娠小于34周的重度先兆子痫采用保守治疗的利与弊。
	Since 1990, ecological water requirement of the river system has been estimated on the concept of ecologically acceptable flow regimes to maintain the integrity of ecosystem.			20世纪90年代后，提出了考虑河流生态系统可接受的流量变化，以维持河流生态系统整体功能为目标确定河流生态需水的研究思路。
	Since 1990, some have made the annual concert a part of their Memorial Day weekend.			从1990年开始，一些人已经把每年的演出当作纪念日周末活动的一部分了。
	Since 1990s of last century, China has fulfilled the transformation from unfavorable balance of trade into favorable balance of trade.			摘要20世纪90年代以来，我国实现了由贸易逆差向贸易顺差的转变。
	Since 1990s, we can see swans come to Summer Palace every year.			据了解，从20世纪90年代初开始，在颐和园每年都能看见“落脚”的白天鹅。
	Since 1991 observers have discovered some 120 exoplanets—worlds outside our solar system.			自1991年起，天文学家已在我们太阳系外的世界，发现了大约120个系外行星。
	Since 1991, details about donors -- name, place and date of birth, medical history, physical characteristics, religion, occupation and interests -- have had to be registered with the HFEA but offspring have no rights of access.			自1991年后，捐献者的名字、住址、出生日期、医疗记录、外貌特征、宗教信仰、职业和兴趣等详细情况都必须在HFEA登记，但是后代无权查阅这些资料。
	Since 1991, one of the important reforms of Indian economic system is the decentralization reform under the federalism, by which Indian federalism is to be changed from the cooperative federalism to the competitive one step by step.			1991年以来印度经济体制改革的一个重要内容就是集权联邦制下的分权化改革，这使得印度联邦制逐渐从合作型联邦制向竞争型联邦制转变。
	Since 1992 more and more research has shown that the USDA pyramid is grossly flawed.			自1992年以来，越来越多的研究显示美国农业部的金字塔有严重的瑕疵。