你买一件东西之前，要先看标签、弄清楚体积或重量。
Read the label to be sure of the size or weight of a product before you buy it.
光滑的皮革确保最终适应和保护，而无需增加体积或重量。
The sleek leather ensures the ultimate fit and protection, without adding bulk or weight.
研究结果表明，既考虑等强度条件又考虑可靠性要求，是使机械体积或重量达到最小的最有效的优化途径。
The results show that combinig equi strength conditions and reliability requirement together is one of the most efficient methods that can minimize the volume or weight of the mechanism.
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