erratic /ɪˈrætɪk/ adjective Learner's definition of ERRATIC
[more erratic; most erratic]
: acting, moving, or changing in ways that are not expected or usual : not consistent or regular古怪的;不穩定的;不規則的 -
His behavior seemed erratic.他的行爲似乎很古怪。
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The light flashes at erratic [=irregular, random] intervals.那盞燈忽明忽暗地閃爍不定。
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He's an erratic [=inconsistent] shooter.他是個發揮不穩定的射手。
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erratic [=fluctuating] oil prices波動的油價
— erratically
/ɪˈrætɪkli/ adverb