共同成本或联合成本 Common or Joint Costs
树脂系合成或碱性物质 Synthetic resin or alkalecence matter
未知或易变合成物 Unknown or Variable composition
合成或综合培养基 synthetic medium
或合同成本 artificial or contractual costs
不对称合成或手性合成 asymmetric or chiral synthesis
或者说合同说成是 agreement which is enforceable by law
或非线性合成 Nonlinear Synthesis
非常适合儿童或成人 perfect for children or adults
想要增加她们头发长度的女性可以有很多方法了，包括织入式假发或合成式假发。
Women who want to add length to their locks can do it in many ways, including weaved extensions or synthetic hairpieces.
为了净化或合成合金，金属必须熔化。
In order to be purified, or combined into alloys, metals must be melted.
合成气或合成燃料技术。
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