Acting directly to produce an effect: an efficient cause.

直接产生效果：生效的原因。

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Famous brand can produce an effect of appreciation of value.

名牌能够产生巨大的价值增值效应。

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The scene seemed almost as if contrived with theatrical artifice to produce an effect upon the beholder.

此处的景象好像经过一番戏剧性的设计，要使目击者产生某种感触。

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It did not take exceptional levels of exposure to produce an effect - abnormalities were found in women exposed to levels below those found in a quarter of US women.

BBC: NEWS | Health | Chemicals may damage male babies

In 1997 IBM harnessed the effect to produce an ultrasensitive disk drive that could pack 2.7 gigabytes of data into a square inch.

FORBES: Magazine Article

Their aim is to develop a drug that can produce the same effect, which could be given when an ambulance arrived.

BBC: Brain's 'stroke shielding' cracked