The National Institutes of Health says carbidopa delays the changes in levodopa until it reaches the brain.

VOA: special.2009.04.07

It was the first time a country had taken action on that, so these are very positive public health changes.

这是第一次国家政府对此采取措施,这都是些对大众健康很有益的改变

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

While the health care bill has cleared Congress, the Senate must still sign-off on a series of changes approved by the House.

VOA: standard.2010.03.22

Several Democrats have said their town hall meetings were not as raucous, and they insist reform supporters remain adamant that Congress should approve changes to the U.S.health care system.

VOA: standard.2009.09.04