词典释义：
双语例句
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The time required for a motion, for example to reach out one's hand, to walk, to stoop down, or crouch and so forth, varies in proportion to the distance of motion.
动作所需的时间，如伸出手、走动、弯腰、作所需的时间如伸出手、时间，弯腰、蹲下，来回走动依据不同的距离而不同。