Choosing appropriate drug delivery system can apparently improve drug efficacy, prolong action time and decrease adverse reaction.

选择恰当的给药系统能明显增强药物疗效、延长作用时间及减少不良反应。

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Methods MTT technique was used to observe the optimal concentration and action time.

方法MTT法观察腺苷的最佳作用浓度及最佳作用时间。

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With the action time of the drug extending, the mortality of cercaria increased(P<0.01).

不同剂量组的尾蚴平均死亡率均随着药物作用时间的延长而增大（P<0.01）。

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"That's the wonderful thing about Earth Day is that it really provides a platform, an opportunity for grassroots organizations and community organizations to really focus on what's happening in their neighborhoods and their homes in their communities, in their businesses and to focus on the priority problems and to engage people maybe for the first time in taking environmental action."

VOA: special.2010.04.21

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

He's known by his action in the world in historical time and his relationship with a historical people.

他之所以闻名是因为他在历史上所做的事,以及与历史上著名人物之间的联系。

耶鲁公开课 - 旧约导论课程节选

Stocks moved lower on the news, as concern that the Fed may continue raising rates in the future seemed to trump the non-action this time around.

FORBES: Fed Takes A Breath

The only difference in recent years is the sea change in appointees, toward judges who are less inclined to find a new cause of action every time a plaintiff comes before them.

FORBES: NY Times Court Clerks Story Misses Broader Shift in Judiciary

We hope a growing chorus for reform will build and administration officials and Congress will take action in time to help the tech sector that has been and can be the basis of innovative U S companies and higher paying jobs.

FORBES: Patent Wars Rage As Tech Industry Waits For Serious Reforms