W — a word character (a through z, a through z, 0 through 9, and underscore).
w——单字字符(a到z、a到z、0到9以及下划线)。
The theory’s vindication would come only with a glimpse of W and Z bosons—particles which, it posited, carried the weak force, just as photons carried the electromagnetic one.
因为，这个理论的最终证实， 惟赖人们一瞥玻色子W和Z的真容——该理论推断这两种粒子携带弱相互作用力，就像光子携带有电磁力一样。
The rub was that both W and Z are heavy.
难点在于，W和Z都是重粒子。
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