曾是GE航空业务高管的沃森说，担忧之处在于一旦中航工业掌握了足够的技术，他们将踢开（GE），自己单干。

The fear is that 'once AVIC knows enough about how to do this, they'll kick [GE] out and be on their own, ' he says.

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沃尔普说，这种激励方式对短期的体重减少特别有效，但是一旦停止金钱激励，体重又开始反弹。

Volpp said the incentives were highly effective at producing short-term weight loss, but when the money stopped flowing, the weight began to creep back on.

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但是一旦冰融化了，太阳就能使海水升温。沃特·米亚尔是一个在国家冰雪数据中心工作的科学家。

But when the ice melts, the sun warms ocean waters. Walter Meier is a scientist with the National Snow and ice Data Center.

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