土钉支护是一种经济便捷的基坑支护方式。
Soil nailing is an economical and convenient bracing structure for foundation pits.
我们必须找到一种更加有效的方式来为城市提供经济、便捷的交通设施。
There has to be a more efficient way of providing a convenient, and economic, transport system for the cities.
产前筛查是指通过经济、便捷、无创伤的方法，查找出某些严重病症的高危个体，从而提高出生人口素质。
Prenatal screen means find out high-risk individuals of certain serious diseases through economical, convenient and noninvasive methods, thereby improving the quality of new-born population.
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