He wrote down the weight of each stone and then added up all the weights.
他把每一块石头的重量记下来，然后把所有的重量加在一起。
He wrote down the weight of each stone and then added up all the weights.
他记下了每块石头的重量，然后再把这些重量加起来得出总数。
The difficulty lies in the choice of index and the weights assigned.
难在评价指标的选择与权重的赋值。
Press the weights straight overhead, keeping your wrists in the same position.
推起负重超过头顶，保持你的手腕在同一位置。
Press the weights straight overhead, keeping your wrists in the same position.
推起负重超过头顶，保持你的手腕在同一位置。
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