abiding
adj.永久的，永恒的(enduring,lasting)
abrupt
adj.突然的
Buyers have withdrawn from the market in view of the abrupt turn of the trend of prices.
由于价格趋势的突然转变，买主已退出市场。
beforehand
adv.事先地(in advance)
He is an early bird and often makes a reservation at the restaurant beforehand.
他是个早起的人，经常事先在餐馆预订房间。
chronic
adj.长期的; 慢性的
The chronic disease troubled the rest of his life.
慢性疾病困扰了他的余生。
concurrent
adj.同时发生的(simultaneous)
The revolution happened with concurrent attacks.
这场革命发生与袭击事件同时发生。
concur
vi.同时发生
Everything concurred to produce a successful result.
同时发生的事情能产生一个成功结果。
contemporary
adj.当代的，同时代的
current
adj.现今的(present)
The current situation is critical for the administration.
当前形势对政府来说至关重要。
cursory
adj.仓促的(hurried)
He put aside the paper after a cursory study.
经过粗略研究，他把论文放在了一边。
dated
adj.有年头的，陈旧的
due
adj.到期的
The deadline for the assignment was due two weeks ago and I was marked down because of late submission.
作业的截止日期是两周前，因为迟交我被记了下来。
duration
n.持续时间(length);期间
elapse
vi.(时间)消逝(go by, pass)
Three years have elapsed since we last met.
自从我们上次见面已经过去三年了。
epoch
n.纪元，时代(age,era)
era
n.时代，时期(period,age)
eternal
adj.永恒的(everlasting,perpetual)
The bride and groom pledged their eternal love to each other.
新娘和新郎向彼此承诺他们永恒的爱。