试试 HanyuGuide 的主动间隔重复系统。
开始 7 天免费试用 · US$49.99 / 年
see 天荒地老[tiān huāng dì lǎo]
God
lit. heaven won't let the sparrows go hungry (idiom)
day
prefix used before the surname of a person or a numeral indicating the order of birth of the children in a family or to indicate affection or familiarity