Colin drifted off into a fitful sleep.科林迷迷糊糊地，时睡时醒。a fitful night's sleep夜间时睡时醒" Our Pearl is a fitful and fantastic little elf sometimes.“ 我们的珠儿有时候是个让人捉摸不定的小精灵....
随着移居者南移，人口出现膨胀，至少是暂时性膨胀。The human population swelled, at least temporarily, as migrants moved south.安全气囊遇到撞击立即膨胀。Airbags inflate instantaneously on impact.唐的救生衣未能充气膨胀。Don's lifejacket had failed to inflate....