| a son of ebony | 黑人 |
| a son of Momus | 滑稽的人 |
| a son of the soil | 本地人, 农民 |
| a song and dance | 歌舞表演, 遁词, 废话 |
| a sop in the pan | 油煎面包 |
| a sound mind in a sound body | 有健康的身体才有健康的精神 |
| a spent bullet | 强弩之末 |
| a square yard | 一平方码 |
| a stab in the back | 诽谤, 伤人暗箭 |
| a stage | 【机】 A阶树脂 |
| a stand of colors | 军旗 |
| a standing joke | 笑柄, 总被嘲笑 |
| a state of siege | 戒严状态 |
| a stiff neck | 固执 |
| A stitch in time saves nine | 小洞不补大洞吃苦 |
| a stool of repentance | 悔罪席 |
| a storm in a teacup | 小题大作, 大惊小怪 |
| a straight fight | 一对一的竞选 |
| a straight race | 全力以赴的竞赛 |
| A straw shows which way the wind blows | 草动知风向 |
| a stream of | 一连串的... |
| a supply | 【电】 A电源 |
| a swing around the circle | 发表政见的巡回旅行 |
| a swollen opinion of | 自视过高, 自高自大 |
| a tale of a tub | 无稽之谈 |
| a tempest in a barrel | 小题大作 |
| a tender spot | 痛处 |
| a tertio ad quartum ventriculum iter | 【医】 中脑水管 |
| a thing of naught | 毫无价值的东西 |
| a thing of yesterday | 最近的事, 最近的东西 |
| a thorn in sb.'s flesh | 眼中钉, 肉中刺 |
| a thought | 稍许, 一点点, 少量 |
| a thousand and one | 一千零一, 许许多多 |
| a thousand times easier than | 比...容易千万倍 |
| a thousand to one | 千对一, 几乎绝对的 |
| a toad under a hammer | 经常受压迫的人 |
| a tough guy | 硬汉 |
| a tough nut | 大胆果断的人, 暴躁的人 |
| a tour of duty | 值班, 值日勤务 |
| a tower of strength | 中流砥柱 |
| a trace | 【电】 A扫描轨迹 |
| a transformaton | 【机】 变换, 变态 |
| a trifle | 有点儿, 稍微 |
| a Triton of the minnows | 鹤立鸡群者 |
| a tropical year | 回归年 |
| a truce to | 别再...了 |
| a true blue | 忠实成员 |
| a tungsten blues | 【机】 钨蓝 |
| a twice-told tale | 尽人皆知的事 |
| a twist in one's tongue | 口齿不清 |
| a twist of the wrist | 熟练的技巧 |
| a type graphite | 【机】 A型石墨 |
| a type graphtie | 【机】 A型石墨 |
| a US postal zone | 美国邮区 |
| a variety | 种种 |
| a variety of | 各种各样的..., 种种... |
| A vary from B in... | 甲与乙在...方面不同, 甲与乙的不同点就在于... |
| a velvet glove | 表面温和的东西 |
| a velvet paw | 肉爪(猫的), 笑里藏刀 |
| a visit from the stork | 婴儿的诞生 |
| a voice in the wilderness | 荒野里的叫声, 无人理睬的改革主张 |
| a walking dictionary | 活字典 |
| a walking skeleton | 骨瘦如柴的人 |
| a war zone | 战区 |
| a warm corner | 激战地区 |
| A watched pot never boils | 心急水不开 |
| a week later | 一星期后 |
| a week of Sundays | 很长的时间, 很久 |
| a wet blanket | 令人扫兴的人(或物) |
| a wet hen | 讨厌的人, 泼妇 |
| a wet smack | 讨厌的人 |
| a whale at | 善于...的人, 热心于...的人 |
| a whale for | 善于...的人, 热心于...的人 |
| a whale of a... | 极大的, 极好的, 了不起的 |
| a whale on | 善于...的人, 热心于...的人 |
| a white crow | 罕见的东西 |
| a white elephant | 沉重的负担, 无用的累赘东西 |
| a white lie | 无恶意的谎话 |
| a white night | 白夜, 失眠的夜晚 |
| a whited sepulchre | 伪君子, 伪善者 |
| a wide place in the road | 小城镇 |
| a widow's mite | 少而可贵的捐献 |
| a wild-goose chase | 徒劳的搜索, 无益的举动 |
| a wolf in sheep's clothing | 披着羊皮的狼 |
| a woman of letters | 女作家 |
| a woman of the streets | 妓女 |
| a woman of the world | 世故的女人 |
| a woman with a past | 有一段不光彩历史的女人 |
| a word and a blow | 一言不合就动手 |
| a word in season | 合时宜的话, 受欢迎的话 |
| A word in your ear | 附耳过来说句私房话 |
| a word out of season | 不合时宜的话, 不受欢迎的话 |
| a yang ko troup | 秧歌队 |
| a yard of clay | 陶制长烟管 |
| a yawning chasm | 裂着大口的陷窟 |
| a yawning hole | 豁开的洞 |
| a year and a day | 满一年, 一整年 |
| a yeast taste | 酵母味 |
| a yellow-dog contract | 以受雇工人不加入工会为条件的雇用契约 |
| a yen for travel | 旅行的渴望 |