"John is bucking for a promotion"
"buck the trend"
"The car tore down the street" "He came charging into my office"
"the yung filly bucked"
If you don't buck up we'll be late.
如果你不快些,我们就会迟到了。
Buck up!Lots of people fail their driving test first time.
别灰心,许多人首次参加驾驶考试都没通过。
You'd better buck up your ideas if you want to pass the exam.
如果你想通过考试,就得加把劲。
On my desk I have a motto which says 'The buck stops here.'
I..kept swimming, not trying to buck the flood.
Some mornings..I hide and try to buck the schedule.
牛津高阶第八版
美国韦氏词典
Dictionary.com
Free Dictionary
维基百科 (自由的百科全书)