一些绿色营销人员吸取了惨痛的教训，绿色营销仍然必须包含所有与传统营销活动相同的原则。
Some green marketers learned the hard way, green marketing must still involve all the same principles of a traditional marketing campaign.
你要汲取惨痛的教训——你们都是非常自私的人。
You are about to learn a painful lesson-you are both very selfish people.
气象部门和组织必须从这场持续的旱情中吸取惨痛的教训。
The on-going drought should be a tough lesson for the meteorology departments and organizations.
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