We should have known that long-distance trains are often many hours late.
我们早应该知道长途火车经常会晚点好几个小时。
Mothers have long known that their home workload was just as heavy as paid work.
母亲们早就知道，她们的家庭工作量和带薪工作一样繁重。
Scientists have long known that bees carry a sort of wrist watch inside their bodies.
科学家早已知道，蜜蜂在体内携带着某种手表。
For this I - and my family - have paid the price that I had long known I would one day have to pay.
也正因为如此我和我的家庭为此付出了我知道终有一天必须付出的代价。
Scientists have long known that our circadian rhythm is regulated by our exposure to light.
科学家们很早就知道光照时间长短控制着我们的生理节奏。
Doctors have long known that autism can run families.
医生一直就知道孤独症具有家族性。
Scientists have long known that penguins need a lot of energy to keep moving.
科学家早已知道，企鹅的活动、行走需耗费极大的能量。
We have known, for a long time, that regulation is about balance.
长久以来我们都知道监管就是要张弛有度。
Scientists have long known that people perceive scents differently.
科学家们早就发现，每个人对气味的感知不同。
Scientists have long known that bacteria play an important role in maintaining your health.
科学家们很早之前就发现了乳酸菌对人体的健康发挥着重要的作用。
Insurers have long known that people who buy insurance are more likely to take risks.
保险商早就知道，投保的人更有可能去冒险。
I have known her so long that I can read her mind.
我与她相识很久，能看出她的心思。
Marketers have long known that the most powerful persuader is peer pressure.
营销者很早就明白，最有力的营销方式是人与人之间的比较。
Educators have known for a long time that people learn in different ways.
很早以前教育家们就知道人们的学习方式不尽相同。
Animal trainers have long known that positive reinforcement is more effective than negative methods.
动物训练师很久以来就知道，正面强化比负面方式更有效。
Animal trainers have long known that positive reinforcement is more effective than negative methods.
动物训练师很久以来就知道，正面强化比负面方式更有效。
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