There has been a gradual increase in the number of families owning refrigerators.
拥有电冰箱的在逐步增加。
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Brilliant's active approach to learning keeps you engaged by throwing you into challenging problems that keep your interest high and progressively adding layers to your understanding by increasing the difficulty of problems.
Brilliant 主动学习方法,通过给你提供具有挑战性问题,保你兴趣高涨,并通过加问题难度逐步加你理解层次,从而保你参与度。