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- 未围之城易防守。Easy to keep the castle that is never besieged.
- 故用兵之法,十则围之,五则攻之,倍则分之,It is the rule in war, if our forces are ten to the enemy's one, to surround him; if five to one, to attack him; if twice as numerous, to divide our army into two.
- 他父亲已过花甲之年。His father is on the wrong side of 60.
- 万年all ages
- 围to circle
- 年中midyear
- 流年fleeting time
- 用数学类真均匀或常态随机变数模拟时域杂讯，与定然时域讯号如，方形、三角、指数递减、或高斯等电压脉波在有限时域?围之有限个时域取样结合。Time domain noise is simulated by the mathematical pseudo uniform or normal random variable and coupled to deterministic signals such as rectangular (rect), triangular (tria), unit step exponential (uexp), even exponential (eexp), or Gaussian (gauss) pulse voltages in finite number of time samples in finite time period.
- 四年four years
- 之後afterwards
- 多年来for the past many years
- 这是个多事之年。This is an eventful year.
- 耳顺之年sixty years of age; the year in life at which a person possesses an obedient ear for the reception of truth
- 七年之痒seven-year itch
- 笃老之年a very old age; a venerable age
- 大饥之年year of great famine
- 大治之年a year of great order
- 女孩子的如花似玉之年是最可贵的。A girl in the flower of her age is the most precious.
- 及笄之年She is of the hairpin age
- 瘟疫之年A Journal of the Plague
