phr. bright (或 clean, neat) as a (new) pin 非常整洁
can (或 could, be able to) hear a pin drop (或 fall) 静得连针掉在地上也听得见
for two pins 〈口〉恨不得，巴不得
He laughed at me. For two pins I could have hit him in the face. 他笑话我。我恨不得打他的耳光。
For two pins I'd resign. 我真想辞职算了。
not care (或 give) a pin (或 two pins) (for) (对…)毫不在乎
not worth a pin 一钱不值
on pins and needles 如坐针毡般的(地)，焦躁不安的(地)，急得要命的(地)
He was on pins and needles while he was answering my questions. 他回答我问题时显得坐立不安。
pin back one's ears 倾听，仔细听
pin down 1. 把…别住(或钉牢)
pin a map down to the wall 用图钉把地图钉在墙上
2. 把…困住，使不能行动
The man was pinned down by a fallen beam. 那人被一根倒下的梁木压住了。
They were being pinned down by machine-gun fire. 他们被机枪火力压制而动弹不得。
3. 使受约束(或限制)；强使承诺(或承担)
pin sb. down to a particular time and place 给某人限定时间和地点
pin sb. down to a promise 使某人不得不履行诺言
pin sb. down to make answers as specific as possible 强使某人回答得尽量具体
pin sb. down to admit that he lied 迫使某人承认说了谎
4. 使明确说明，使详述；确定，证实
They tried to pin him down on major issues. 他们试图迫使他对主要问题表态。
I cannot pin the quotation down to its author. 我不能确定这条引语出自哪位作家。
pin one's colours to the mast 见 colour
pin one's faith on (或 to, in) 见 faith
pin one's hopes on 见 hope
pins and needles (肢体发麻时的)针刺感
I've pins and needles in my right leg. 我右腿发麻。
pin sb.'s ears back 见 ear¹
pin up 1. 把…钉住，把…别住
2. 把(图画等)钉出来给人看
The teachers usually pin up the best work on the board. 教师常把做得最好的作业钉在黑板上。
3. 【建】用楔子校平(或校直)(砖墙等)
pull the pin 〈美俚〉
1. (原铁道用语)拆开
2. 离职
3. 离开城镇
4. 遗弃妻子；抛弃家属(或朋友)
stick pins into sb. 促使某人行动；激怒某人