英文解释： adjective: guided by practical experience and observation rather than theory
例句： Rather than make a philosophical appeal to the Congressmen, the Speaker decided to take a far more pragmatic approach, making small side-deals that would add votes to his bill.
英文解释： adjective: fraught with danger
例句： People smoke to relax and forget their cares, but ironically, in terms of health risks, smoking is far more precarious than either mountain-climbing or skydiving.
英文解释： noun: an example that is used to justify similar occurrences at a later time
例句： The principal explained that even though one student had done modelling work outside of school, the outfits that student wore in those photographs in no way established a precedent for what could be worn at school dances.
英文解释： "adjective: hasty or rash
verb: to cause to happen"
例句： "Instead of conducting a thorough investigation after the city hall break-in, the governor acted precipitately, accusing his staff of aiding and abetting the criminals.
The government's mishandling the hurricane's aftermath precipitated a widespread outbreak of looting and other criminal activity."
英文解释： adjective: done with very great haste and without due deliberation
例句： He was expecting a precipitous rise in the value of a "hot" tech stock, so he was disappointed when it only inched up a dollar or two each day.
英文解释： verb: keep from happening or arising; make impossible
例句： The manager specified that all other gates be locked, to preclude the possibility of persons without tickets entering the arena undetected.
英文解释： adjective: characterized by or characteristic of exceptionally early development or maturity (especially in mental aptitude)
例句： Though only seven years old, she was a precocious chess prodigy, able to beat players twice her age.
英文解释： noun: a strong liking
例句： Monte had a predilection for the fine things in life: Cuban cigars, 200 dollar bottles of wine, and trips to the French Riviera.
英文解释： verb: take the place of or have precedence over
例句： A governmental warning about an imminent terrorist attack would preempt ordinary network programming on television.
英文解释： adjective: done before someone else can do it
例句： Just as Martha was about to take the only cookie left on the table, Noah preemptively swiped it.