One very effective herbicide is safe for corn, but soybeans are damaged even by the herbicide's residue, which remains in the soil more than a year after the herbicide is applied.

某种非常有效的除草剂对玉米来说是安全的，但即使是除草剂的残留物也会对大豆造成损害，该残留物在施用除草剂一年多后仍残留在土壤中。

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It is the most effective solar energy conversion process on Earth and all power needs for a year could be met by the energy contained in the sunlight hitting the Earth in one hour.

这是地球上最有效的太阳能转化过程，如果将太阳光照射地球表面一个小时产生的所有能量聚积起来，就足以满足人类整整一年的能源需求。

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Slugs can make or break a season at this time of year. Regularly checking known hiding spots and relocating them to the other side of a stream at the back of my plot is an effective means of control.

蛞蝓会决定一个季节的收成，定期检查已经暴露的它的藏身之地，防止它转移至另一端，然后又回到老地方，这是一个有效的控制方法。

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Representatives from Caerphilly County Council told the committee that the lack of secure funding year on year is the main barrier to effective delivery of biodiversity action.

BBC: Sustainability committee

It is remarkable how much more effective a new year's resolution to lose weight is if you make it public and agree to a forfeit if you fail.

ECONOMIST: Schumpeter

Such a plan also gives parents an unobtrusive way to check on their student's academic progress throughout the year--and a carrot is more effective than a stick when urging better performance.

FORBES: College Debts