bucket down
下 (傾盆) 大雨
Take an umbrella; it's bucketing down.
budge up
挪出空間；騰出地方
We had to budge up to let the fourth person in the back of the car.
buff * up +
擦亮；擦淨
The silver candlestick looked lovely after I buffed it up.
buff * up +
改善
After the scandal, the politician tried to buff up his public image.
buff up on +
快速增進知識
I buffed up on my grammar before the test.
bug off
走開，滾開
I told her to bug off because she was annoying me.
bug out
嚇得嘴巴張得大大的
He bugged out when she turned up.
bug out
倉促離去；逃竄
They bugged out when the police arrived.
build * up +
發展；擴展
She built the business up from nothing into a market leader in less than a decade.
build * up +
增加
Tension has been building up ever since the government passed the unpopular law.
bulk * out
使變大、變厚；使膨脹；使變得更厚實、更豐滿
I bulked the essay out with a few quotes to reach the number of word required.
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