It's hard to estimate the costs and benefits of making different choices.

很难估计出不同选择的成本和收益。

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To allow for different expressions, Mr Molina had small reflective beads glued to his face and then was filmed making different expressions.

考虑到要拍摄不同的表情，他们在莫利纳的脸上贴上了可反光的小球，然后拍摄他不同的表情。

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The braver bosses could even try making different steels, or the same steels differently.

ECONOMIST: Steel: Rust never sleeps | The

What will drive home to people who don't live in Wales that devolution means politicians in different countries making different decisions about big things?

BBC: Soft launch for the soft opt out

He calculates a range of poverty rates by making different assumptions about the needs of married versus single parents and the relative cost of children.

ECONOMIST: The war over poverty | The