A bad padlock invites a picklock. 开门揖盗。
A bad thing is dear at any price. 劣质商品卖什么价也算贵。
A bargain is a bargain. 买卖一言为定。
A beard well lathered is half shaved. 良好的开始是成功的一半。
A best marksman may miss. 智者千虑，必有一失。
A blind man who leans against a wall imagines that it's the boundary of the world.坐井观天。
A casual remark sounds significant to a suspicious listener. 言者无心，听者有意。
As they sow, so let them reap. 种瓜得瓜，种豆得豆。
Attempt not or accomplish. 不干则已，干必彻底。
Author like coins grow dear as they grow old. 作家和钱币一样，越老越珍贵。
Avoid the ford on which your friend was drowned. 前事不忘，后事之师。/前车之辙，后车可鉴。
As devotion unites lovers,so perfidy estranges friends. 忠诚是爱情的桥梁，欺诈是友谊的敌人。
As the inner life is ,so will be the language. 言为心声。
As the scales is an instrument for weighing things, so practice is a touch-stone for distinguishing right from wrong.天平是轻重的衡量器，实践是是非的试金石。
As the touchstone tries gold, so gold tries man. 试金之石可试金，金钱黄金能试人。
An uncut gem does not sparkle. 玉不琢，不成器。
Anger dies quickly with a good man. 人善气易平。
Anger rusts intellects so that it cannot discern right from wrong. 怒火锈蚀理智，令人难辨是非。
Any port in a storm. 风暴到来不择港。
As a bonfire dispels chilliness, so our solidarity drives away the enemy. 篝火能把寒冷驱散，团结能把敌人赶跑。
As a man is ,so its his company. 观其友，知其人。
An ill life, an ill end. 恶有恶报。
An induvidual is only a tiny grain in the vast sea; it is the masses of people that are the boundless ocean. 个人只是沧海的一粟，人民才是无限的大海。
An oak is not felled at one stroke. 万事不能一蹴而就。
An occasion lost cannot be redeemed. 机不可失，时不再来。
An ounce of discretion is worth a pound of learning. 一分谨慎抵得上十二分学问。
An army of stags led by a lion would be more formidable than one of lions led by a stag. 一只狮子领一群鹿比一只鹿领的一头狮子更难对付。
An evil speaker differs from an evil-doer only in opportunity. 说坏话的人和做坏事的人，区别仅在于机会。
An expert wants to know how the job is done, but a layman presses round just watching for fun. 内行看门道，外行看热闹。