Our hypothesis is that typically-developing children, through the course of development, learn a large repertoire of laugh sounds in order to negotiate social circumstances.
威廉说，“我们的假设是，正常发育的孩子，在发育过程中，为了顺利地融入社交环境而学习了大量笑的技巧。
The target of human power developing in western China is to establish an excellent system of talent circumstances.
构建优良的人才环境系统是西部人才开发的目标。
Under the circumstances of the world population increase and the grain shortage, the necessity developing different forage resources was discussed.
讨论了在世界人口增长、粮食短缺的情况下，积极有效地开辟多种饲草资源的必要性；
Under the circumstances of the world population increase and the grain shortage, the necessity developing different forage resources was discussed.
讨论了在世界人口增长、粮食短缺的情况下，积极有效地开辟多种饲草资源的必要性；
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