肾素- 血管紧张素-醛固酮系统在血压昼夜节律的调节中起着关键作用。
The renin-angiotensin-aldosterone system plays an important role in regulating the circadian rhythms of blood pressure.
拉丁裔选民的关键作用在西部地区的很多州都会显现出来，这个现象源于在纽约、洛杉矶等大城市内拉丁裔居民与黑人长久以来存在的种族紧张气氛。
This is partly because there is a long history of racial tensions between Latinos and blacks in big cities such as New York and Los Angeles.
拉丁裔选民的关键作用在西部地区的很多州都会显现出来，这个现象源于在纽约、洛杉矶等大城市内拉丁裔居民与黑人长久以来存在的种族紧张气氛。
This is partly because there is a long history of racial tensions between Latinos and blacks in big cities such as New York and Los Angeles.
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