1. I had to pipe up when they were pushing that crazy idea.
    当他们在鼓吹那疯狂的想法时，我不得不大发议论。

1. pipe up的意思

1. 开始吹奏：pipe organ 管风琴 | pipe up 开始吹奏 | pipe 管

2. 开始吹奏, 尖声说话 装饰衣边 加快速度; (风力)增强 [口]哭：pipe in 用电讯设备传送 (音乐、讲话等) | pipe off 把某人列入黑名单; 向警察告发; 宣布...不受欢迎 | pipe up 开始吹奏, 尖声说话 装饰衣边 加快速度; (风力)增强 [口]哭

3. (尖声地)说,讲话：12. dashboard: (汽车等上的)仪表板. | 13. pipe up: (尖声地)说,讲话. | 14. chorus: 齐声,异口同声.

1. （在沉默了一阵之后）开始说话，开始讲话（尤指说出令人吃惊或奇怪的事情）
    If someone who has been silent for a while pipes up, they say something, especially something surprising or strange.

    e.g. ''That''s right, mister,'' another child piped up...
           “没错，先生，”另一个孩子突然说道。
    e.g. At which point I piped up and asked whether it might be at all possible to have some positive input.
           在此我插了一句询问这事儿是否会产生一些积极的投入。

1. utter a shrill cry

    Synonym: shriekshrillpipe

2. begin to play or sing