补充和替代疗法更古老形式叫做传统医学。
The more ancient forms of complementary and alternative medicine are also known as traditional medicine.
除非以书面形式做成，对本合同所进行的补充和修改均无效。
No addition or modification to this contract shall be valid unless made in writing.
除非以书面形式做成，对本合同所进行的补充和修改均无效。
No addition or modification to this contract shall be valid unless made in writing.
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