strengthen

动词 strengthen:

1. make strong or stronger
   同义词：beef up, fortify
2. gain strength
3. give a healthy elasticity to
   同义词：tone, tone up

1. Recent developments lend credit to (ie strengthen belief in) previous reports.
   最近的事态发展说明先前的报道是可靠的。
2. He has been brought in to strengthen the defence.
   已请他来加强後卫力量。
3. The current strengthened as we moved down the river.
   我们顺流而下时，水流更急了。
4. The soldiers strengthened their defenses.
   士兵们加强了他们的防御工事。
5. The wind strengthened during the night.
   风在夜间刮得更猛了。