Reaction was more subdued at the State Department, where Acting Spokesman Robert Wood said Monday's Security Council statement condemning the missile launch and threatening tougher sanctions spoke for itself, and that retaliation would only mean further isolation for Pyongyang.

VOA: standard.2009.04.14

If that protein is an enzyme then you've and you've switched it from an 'off' position where it's not catalyzing a reaction to an 'on' position where it is, you've changed the biochemical state of the cell, you've changed the chemical reactions that can occur within the cell, and you've changed its behavior.

如果这种蛋白是一种酶的话,你就能够将酶从无催化作用的静息态,激活至能催化反应的激活态,你改变了细胞的生化状态,也改变了细胞内发生的化学反应,改变了细胞的行为

耶鲁公开课 - 生物医学工程探索课程节选

The State Department said Monday the administration still has a hand extended to Iran despite the chilly reaction by Iran's supreme leader to Mr.Obama's videotaped holiday greeting to Iran late last week, in which he said the United States seeks honest engagement with Iran's Islamic government based on mutual respect.

VOA: standard.2009.03.23