的41个是最多的，其中几个来自追踪健康状况的公司，还有一个据称可以按几十项要素，包括邮政编码和种族来瞄准用户。

Had the most, 41, including several from companies that track health conditions and one that says it can target consumers by dozens of factors, including zip code and race.

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我觉得为了保证射箭的准确性和一致性，“背加力”是仅次于瞄准的基础关键要素。

I feel that it is second only to aiming as the key fundamental part of shooting form that generates accuracy and consistency.

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