4.20

(1)anonymous

a.匿名的，无名的，无特色的

eg.According to an anonymous source ,the novel has been completed.

(2)apparatus

n.器械，仪器，装置

eg.Astronauts have special breathing apparatus.

(3)appease

vt.使满足，平息，抚慰

eg.The angry passenger was appeased by their apology.

(4)appraise

v.估价，评定，坚定

appraisal  n.估价，估量，评价

eg.It would be unwise to buy the house before having it appraised.

(5)evacuate

vt/vi .  疏散，排出，撤出

eg.Residents were quickly evacuated when the earthquake happened.

(6)imperative

n.命令，诫命，需要

a.极重要的，必要的，紧急的

eg.It is absolutely imperative that we finish by next week.

(7)solitude

n.孤独

in solitude

eg.She longed for peace and solitude.

(8)tactful

a.机智的，老练的

eg. A tactful remark

(9)emulation

n.效法，竞争，模仿

eg.The young man works hard in emulation of his father .

(10)mandate

n.命令，指令，要求

vt.把…置于委任管理下

eg.a mandate for an end to the civil war.