But the interim director of the U.S.Centers for Disease Control and Prevention, Richard Besser, says it will be months before any decisions are made about mass-inoculations.
VOA: standard.2009.04.30
Well that process of control to maintain a constant environment inside our body, whether it's an environment of constant mass or constant composition, or constant temperature, is called homeostasis.
这个控制过程维持着,体内环境的恒定,不论是内环境中物质的量的稳定,或者成分的稳定,或温度的稳定,这种状态叫做内稳态
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