事实上，研究环圈量子重力学的理论学家认为，物质本身不过是时空纽带扭曲缠绕而成的编织物。
Indeed, theorists working on loop quantum gravity think that matter itself is merely the result of twisting and braiding ribbons of space-time.
不过，在描述刺刀固定方式的时候，他就有理有据多了——以前，人们曾经尝试用两种方式将刺刀固定到火枪上：附环固定以及插座式刺刀。
He's on more solid footing though when he reports that two kinds of mountings were tried to affix a bayonet to a musket; ring mounting and a socket bayonet.
不过洗牙次数再多也不能去除由于四环素或系统性疾病导致的牙齿深度着色，因为这些色素已进入你的牙齿内部，你需要采取更加积极地措施来对付它们。
No amount of cleaning will remove the severe staining left by tetracycline or systemic disease because these pigments lie inside the tooth; you'll have to take more aggressive measures against these.
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