mettle

n. 勇气，斗志

meths, methyl alcohol, methylated, methylated spirits, meticulous, meticulously, meticulousness, metier, metre, metre (US meter), metric, metric ton, metrical, metricate, metrication, Metro, metronome, metropolis, metropolitan, Metropolitan France, mettlesome, Meuse Valley, mew, Mew Jersey, mews, Mexican, Mexico, mezzanine, mezzo, mezzo-soprano, mezzotint, MF, mg, Mgr, MHz, mi, mi (also me), MI5, MI6, Miami,