In telephony, a signal used by a telephone operator to gain the attention of another, or a signal sent by a subscriber held by an operator to gain the latter's attention. 在电话技术中，电话操作员使用的一种信号，用来获得另一次注意，或由操作员保持的用户发送的一种信号，用以获得随后的注意。
I want to have it send by an urgent telegram. 我想用加急电报把它发出。
Kindly acknowledge receipt, and have the goods send by last motorship in September. 收到本单后，来函告知，并希最迟于九月底以前装船为盼。
