Exercise is one of the few factors with a positive role in long-term maintenance of body weight.

锻炼是对长期保持体重有积极作用的少数因素之一。

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Moreover, the positive signs in housing are partly driven by short-term factors.

此外，住宅市场发出的积极信号一定程度上是由短期因素所引起的。

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Better screening, early detection and access to treatment plus a decrease in risk factors like smoking probably explain part of the positive trend among the high-income countries.

或许更好的筛查条件、早发现早治疗以及类似吸烟等诱因的减少能解释高收入国家癌症患病率下降的原因。

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It is expected that Chicago's renowned skyline, history and cultural heritage will be positive factors in its Olympics bid, while the city also boasts good transport infrastructure.

BBC: Obama to woo IOC over Chicago bid

There are some positive factors that are putting the emerging markets back in focus.

FORBES: The Week Ahead: No Budget and $112 Crude Oil, But Who Cares?

In the current economic climate where positive GDP growth is of utmost importance, policymakers may be overlooking critical factors affecting overall health.

FORBES: Wealthier Nations, Healthier. But is That Always the Case?