energy
n.活力,干劲,精力;能,能量,能源
Helping people takes time and energy .帮助他人需要花费时间和精力。
enforce
vt.实施,生效,执行;强迫,迫使
Parking restrictions will be strictly enforced .停车限制将会严格执行。
engage
vt.吸引,占用;聘;使订婚 vi.(in)从事于
The two parties engaged upon an escalating political struggle.两党陷入了日益加剧的政治斗争。
fluctuate
vi.波动,涨落,起伏
Insect populations fluctuate wil dly from year to year.昆虫的数量每年变化很大。
focus
v.(on)聚集,集中,聚焦 n.焦点,焦距,聚焦
He needs to focus more on his career.他需要更加关注自己的事业。