这些数学课本经过运用活泼而精巧的图片及风趣的活动在数学进修过程中植入了很多乐趣和生机。
These math text books instill a lot of fun and excitement into the learning of math through the use of lively and colourful pictures and fun activities.
比如，让参与实验的人们微笑，他们会表现的更加积极，他们评价图片相对而言更加风趣幽默。
Causing participants in experiments to smile, for example, leads them to report more positive feelings and to rate cartoons (humorous drawings of people or situations) as being more humorous.
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