短语讲解：

1. About two-thirds of oil production is carried out by non-OPEC countries.

carry out 进行; 执行; 完成
例句：He hasn't the funds to carry out his design.
他没有资金来施行他的计划。

2. That has led to some markets to have more oil than needed.

lead to 导致; 把…带到; 领到
例句：Economic models often lead to the study of systems of equations.
经济模型经常导致对方程组的研究。

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