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来源:雅诚德英语网
ANYONE who has fired a rubber band across the office or classroom will know the joy of storing and releasing kinetic energy.
曾在办公室或是教室弹射橡皮筋的人都知道,那种一张一弛的感觉其乐无穷。
ANYONE who has fired a rubber band across the office or classroom will know the joy of storing and releasing kinetic energy.
曾在办公室或是教室弹射橡皮筋的人都知道,那种一张一弛的感觉其乐无穷。