S57. spur-S58. stable

spur 

构词: s(强化语义)+pur(刺)

         短刺 n. 马刺, 刺激。v. 激励。
相关: spear, per-, pirate
搭配: powerful spur, on the spur of the moment, a spur to

         efficiency, spur economic growth / demand / sales / creativity 

近义: stimulus, impetus, impulse, incentive, motive;

          stimulate, incite, urge, prompt, drive

考点: 因果关系

stable, stability
构词: st(= stand 站)+able(能...的)

          站得住的 adj. 稳定的, 可靠的
相关: state, statesman, statistics, station, status, statue
搭配: stable state / situation / structure / system / growth / life /

personality / market / prices
stability n. 稳定性。
social / political / economic / financial / emotional stability 

近义:solid, firm, sure, fixed, sturdy, secure, steady, permanent, durable, reliable, dependable