今天下午：this afternoon

昨天下午：yesterday afternoon

明天下午：tomorrow afternoon

周六下午：Saturday afternoon

正午：high noon

上午：forenoon, morning, ante meridiem(a.m.)

下午：afternoon, post meridiem(p.m.)

中午：noon, midday, noonday

早晨：early morning

傍晚：evening, toward evening, at night fall, at dusk

夜晚：night, nighttime

上半夜：before midnight, the first half of the night

下半夜：the time after midnight; the latter half of the night, the small hour

午夜：midnight

黎明：dawn, daybreak

子午：meridian

子夜：midnight

夜半：midnight, dead of night, the noon of night

黄昏：dusk, gloaming

半夜：midnight, in the middle of the night, half of a night

午前：forenoon, before noon, morning

午后：afternoon, post meridiem(p.m.)

午时：the period of the day from 11 a.m. to 1 p.m.

少年：early youth, juvenile, teenage

青年：youth, young people, a green youth

壮年：the prime of life, post adolescence

童年：tender age, boyhood

中年：middle age, mid-life

老年：old age, sunset,

晚年：old age, one’s latter years, twilight years

成年：adult age, full age

高寿，高龄：advanced age, agedness

征兵年龄：conscription age

应征年龄：draft age

合格年龄：eligible age

白发苍苍的老年：hoary age

法定年龄：lawful age

选举年龄：voting age

入学年龄：school age, the age of admittance

成熟年龄：the age of maturity