球员会因为被严厉罚款而更容易变得不高兴。
除非我们处理好我们的麻烦事,否则我们很容易变得不高兴。
And unless we deal with our problem, we can easily become unhappy.
大象常常会喜欢它们的训象师,如果换了人,便会变得不高兴。
Elephants often become very fond of their trainers and may become unhappy if they are replaced.
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