而且蜜蜂能觉察到空气中浓度仅万亿分之一单位的特定化学物质。
The bees can detect the target chemicals in the air in concentrations as low as a few parts per trillion.
即一万亿分之一特斯拉，特斯拉是磁感应强度的计量单位。
那不算什么：2010年，互联网用户总计发送了107万亿(没错，单位是“万亿”)条消息。
That's nothing: Internet users collectively sent 107 trillion (yes, that's with a "t") messages in 2010.
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