The cake had 'Happy Birthday' piped on it.

蛋糕上裱了“生日快乐”的字样。

Water is piped from the reservoir to the city.

水用管子从水库输送到城市。

The speech was piped over a public address system.

讲话经广播系统传送出去。

The person next to me piped up with a silly comment.

我旁边那位愚蠢地评论起来。

The heated gas is piped through a coil surrounded by water.

受热气体通过水中的一根螺旋管输送。