四趟無人任務

siˋ tangˋ wuˊ renˊ renˋ wuˋ

(Four unmanned) Four unmanned missions

四趟 siˋ tangˋ

(Four journeys, Four trips) Four journeys, Four trips

無人 wuˊ renˊ

(No one, Uninhabited, Unmanned) Unmanned, Uninhabited, No one

無人任務 wuˊ renˊ renˋ wuˋ

(Unmanned) Unmanned mission

任務 renˋ wuˋ

(Duty, Mission, Missions, Responsibility, Task) Mission , Missions , Duty , Duties , Task , Tasks , Responsibility , Responsibilities , Mission, A mission, The mission, Missions, The missions