英文：This discovery marks a quantum leap forward in the fight against cancer.
中文：這一發現标志著治療癌症的 一大突破.
英文：A hypothetical particle postulated to be the quantum of gravitational interaction and presumed to have an indefinitely long lifetime, zero electric charge, and zero rest mass.
英文：A particle, such as an electron, a proton, or a neutron, having half-integral spin and obeying statistical rules requiring that not more than one in a set of identical particles may occupy a particular quantum state.
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