A green light on the printer signifies that the document has been sent successfully.

印表機亮綠燈表示文件已成功傳送。

The red stamp on the invoice signifies that payment has already been received.

發票上的紅色印章表示款項已經收到。

A rise in bookings during March usually signifies strong demand for summer travel packages.

三月份訂位量上升，通常意味著暑期旅遊行程的需求強勁。