Last August the XT chain of gasoline stations had a temporary sales promotion in effect.

去年8月，XT 连锁加油站进行了一次临时促销活动。

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The effect was to disrupt the food chain, starving many animals and those that preyed on them.

后果是打断食物链，使许多动物和捕食它们的动物饿死。

《柯林斯英汉双解大词典》

Mr Smith said the oil could "potentially affect the food chain and therefore have a knock-on effect on other wildlife".

BBC: Chesil Cove seabird rescuer talks of 'distress'

In terms of the effect, I believe that the effect of the -- on the supplies chain that was caused by -- the global supply chain, especially in automobile manufacturing, that was caused by the earthquake and tsunami, that that has certainly diminished.

WHITEHOUSE: Press Briefing

After much foot-dragging by the restaurant industry, a new rule requiring chain restaurants display calorie counts on their menus is taking effect in the latter half of this year.

FORBES: Calories on Restaurant Menus Won't Make Us Eat Less -- But Here's One Thing That Might