If a white butterfly flies from the southwest, expect rain.

如果一只白蝴蝶从西南方向飞来，那就要下雨了。

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If a white butterfly enters your house and flies around you, you will die.

如果一只白蝴蝶进了家里，绕着你不停飞，你将要死去。

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I drew a bold black and white butterfly pattern and took it to Mrs. Vidian.

我设计了一个黑白分明的蝴蝶图案，交给了威迪安夫人。

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To find out if the new compounds can alter the course of infection in an animal, Dr Blackwell's group infected some cabbage white butterfly caterpillars with P. aeruginosa.

ECONOMIST: Novel antibiotics

Just when I thought the buyer had finished his inspection, he went over the selection again, lingering on one in particular a white dress with a large rhinestone butterfly on the front.

FORBES: Successful Start-Ups Use Bold Strategies to Kick Start Sales

Most notably, the X920e for China and Russia is the only model that comes with red capacitive buttons instead of white, and for some reason the J Butterfly managed to get away with no logo placement at all on the front.

ENGADGET: HTC Droid DNA vs. J Butterfly vs. Butterfly: fight! Mobile