Contemporary China's social transition, in the most essential sense manifested in the economic sphere system changes.
当代中国的社会转型, 在最本质的意义上表现为经济范畴的制度变迁.
Needs are defined as being essential to your wellbeing or survival.
Some people say that food, clothing and shelter are life essentials.
So these are the essential elements of comprehensive immigration reform.
Essential services ( ie the supply of water , electricity, etc ) will be maintained.
基本的公用业务 ( 水电等的供应 ) 一定得到保障.