The low labor cost is a main comparative advantage of China's, manifested chiefly by low cost, large quantity and sufficient supply of rural labor force.
中国的比较优势很重要的一条就是劳动力成本低，主要表现在农村劳动力成本低，数量大，供给充裕。
2
Understand and use comparative sentences, make a comparison with this sentence pattern, know the complement of quantity.
掌握“比”字句的意义、用法，运用该句型进行比较，了解数量补语。
3
This paper mainly makes a comparative study from two aspects-operating efficiency and code quantity-to show the merits of Easy Language.