:to increase gradually in amount as time passes:accumulate逐渐增加;积累;积聚
They pick up the garbage that builds up [=collects] along the highway.他们收捡公路上积下的垃圾。
Dust has begun building up on his piano.他的钢琴已经开始蒙上灰尘。
These dangerous chemicals are building up in our lakes and ponds.在我们的湖泊和池塘里这些危险的化学物质越来越多。
2
build (something or someone) uporbuild up (something or someone):to say many good things about (something or someone)鼓吹;吹捧
Political candidates are trying to build themselves up [=promote themselves] with public speeches and TV commercials.各位政治候选人正努力通过公共演讲和电视广告吹捧自己。
The movie was built up so much [=we heard so many good things about the movie] that we were disappointed when we actually saw it.这部电影被吹捧得太好了,所以我们真正看完以后觉得大失所望。