1. Such massive total population and annual population growth constitutes a heavy burden for China, a country that has a weak foundation and little cultivated land, whose economic and cultural level is rather backward and where development is regionally imbalanced. 
   如此庞大的人口总量和年人口增长量，对于中国这样一个底子薄、耕地少、经济文化水平比较落后和地区之间发展不平衡的国家来说，是一个沉重的负担。
2. basis for urban growth 
   城市发展依据
3. retarded growth of fetus 
   胎萎不长
4. techniques of crystal growth 
   晶体生长技术
5. theories of crystal growth 
   晶体生长理论

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