常见例句In a more complex one-step reaction, bonds both form and break.在较复杂的一步反应里，既有化学键的形成，也有化学键的断开。Fiber reactive dyes are from true chemical bounds between dyestuff and fiber.纤维活性染料来源于染料与纤维之间形成的真正化学键。 返回 chemical bonds