The variational iteration method proposed by Ji-huan he was applied to a kind of strongly nonlinear oscillators.

应用何吉欢的变分迭代算法，求解得到了一类的强非线性振动方程。

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Late one cloudy afternoon, when Huan Zang, a young man in his late teens, was passing by the foot of a mountain, he heard a girl's giggling.

是一个阴暗的午后﹐黄章﹐一个十八﹑九岁的年轻男子﹐于经过一座山脉的山脚下时﹐他听到了一个女孩子的傻笑声。

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Huan Zang hesitated, for he dared not go ahead to knock on the door of the house.

黄章犹豫了﹐他不敢上前去敲这栋房子的大门。

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