You can't tell, just by looking, whether pollen containing a foreign gene can poison butterflies or fertilize plants miles away.

光凭外观，你无从知道含有外源基因的花粉粒是否会毒害蝶儿，或是传播到几公里外使其他植株受精。

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The flower matured and released its pollen to the winds, and the pollen was taken by the winds and carried to a foreign country.

这朵花成熟后，风儿带着它散放出的花粉来到一个陌生的国度。

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When it is time to make the plants male again, researchers spray on a chemical (which might also prove a money-spinner for the company) to trigger the activity of another foreign gene that blocks the activity of ribonuclease and allows pollen production once more.

ECONOMIST: Terminator genes