If you don't know a person's last name, use 'ma'am' or 'sir'.
如果你不知道一人的姓, 你应称呼他为 'ma'am' 或 'sir' 。
Three million people watched as the ashes of this great man were gently poured into the brown waters of the river that would carry them to the ocean.
还有300万人守望着这位伟人的骨灰缓缓撒入褐以的恒河,河水把他的骨灰送向大海。