全速地,尽全力地,非常忙地
They're working flat out to finish on time.
他们止在加紧工作,想要准时完工。
We're flat out this week and can't fit in another single appointment.
这个星期我们忙得不得了,不能安排其他任何约会了。
坦率的,断然的,清楚的,明确的,完全的,彻头彻尾的
He stands his flat-out assertions.
他坚持他那些坦率的主张。
Richard Allen's plea of being flat-out dumb
理查德·艾伦推托自己完全是外行,一窍不通