例句： China is a country rich in crude oil.

例句： I hate dealing with large impersonal companies.

例句： Her career culminated in her appointment as director.

例句： Take this umbrella with you.

例句： It rained on and off all day.

例句： He showed/exercised considerable restraint in not suing for a divorce.

例句： Good secretaries are always in demand.

例句： The banner lent color to the streets.

例句： The mask fitted tightly over his face.

例句： A unit of time corresponding approximately to one cycle of the moon's phases, or about 30 days or 4 weeks.