Those countries try to regulate oil production via OPEC, but they often fail to stick to predetermined targets.

那些国家试图通过石油输出国组织控制石油产量，但是他们常常很难坚持预定的目标。

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Most people use the less effective method of multi-changing, and fail to stick with things, and blame it on their “lack of discipline”.

而多数同时进行多项改变的人就没能取得这么好的效果，最终坚持不下来并且自责“没有恒心”。

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Typically, people fail to stick to their goals because their resolutions are too demanding or unrealistic, like committing to losing 20 kilos or quitting playing video games.

通常人们无法坚持自己的目标，大都因其过于困难或是不切实际，比如减肥20公斤，或是戒掉电脑游戏。

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But more than a quarter of people on combination treatments fail to stick to complex plans which involve taking up to 15 pills every day.

BBC: Drug simplifies living with HIV

And those prosecutors who take race-hate crimes seriously often fail to make charges stick: it is frequently hard to find witnesses or persuade them to give evidence.

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If they fail, radio operators could be content to stick with analog.

FORBES: Big Audio Dynamite