perennial
adj.长久的,永远的(permanent,long-lasting,year round)
permanent
adj.永久的(constant,continuous)
The permanent position with the foreign company attracted most people.
这家外国公司的永久职位吸引了大多数人。
pressing
adj.紧迫的(urgent)
previous
adj.以前的(preceding,foregoing)
previously
adv.先前，以前(earlier,formerly)
punctual
adj.守时的
It is important for young people to be punctual for an appointment.
对年轻人来说，准时赴约很重要。
recently
adv.最近地( lately,currently)
schedule
n.时间表，计划表(calendar,timetable)
session
n.一段时间;一次
The training session lasted for two hours.
训练持续了两个小时。
simultaneously
adv.同时地(at the same time,concurrently)
In the vacuum environment, feather and iron ball fall to the ground simultaneously from the same height.
在真空环境中，羽毛和铁球从同一高度同时落到地面。
subsequent
adj.随后的，后来的(following,later)
Subsequent events terrified the soliders.
随后的事件吓坏了士兵。
synchronize
vt.同时发生(concur)
The policemen synchronized their actions.
警察的行动同步。
temporal
adj.一时的，暂时的(transient,momentary)
temporary
adj.临时的(momentary)
tentative
adj.暂时的(temporary)
The two governments have reached a tentative conclusion regarding border issues.
两国政府就边境问题达成了初步结论。
transient
adj.短暂的(temporary,short-term);过路的
His stay with us was transient.
他只是和我们暂时待在一起。
transitory
adj.短暂的(temporary,momentary)
urgent
adj.紧急的，迫切的(imperative)
It is urgent that effective measures be taken to settle the explosion.
采取有效措施来解决爆炸问题是当务之急。