求翻译：第一次对火星的探测是由水手4号飞行器在1965年进行的。人们接连又作了几次尝试，包括1976年的两艘海盗号飞行器（左图为海盗号拍摄的照片）。此后，经过长达20年的间隙，在1997年的七月四日，火星探路者号终于成功地登上火星。是什么意思？

The first exploration of Mars by Mariner 4 spacecraft carried out in 1965. One after another and made several attempts, including two 1976 Viking spacecraft (left to Viking photographs). Since then, after a 20-year gap in the 4 July 1997, Mars Pathfinder Mars finally succeeded.

The first meeting of the Mars exploration is the No. 4 aircraft sailor in 1965. It has also made several attempts, including the two pirates 1976 craft (left photo) photographs taken of the pirates. After that, there were as many as 20 years, the gap in the 4 July 1997, Mars Pathfinder, finally made

First time was carries on to Mars' survey by the sailor 4th flight vehicle in 1965.The people have made one after another several attempts, including 1976 two pirate number flight vehicle (left chart for pirate number photography picture).Hereafter, passes through 20 years gap, in 1997 on July 4, Ma

First Mars probe was carried out by the Mariner 4th aircraft in 1965. Successive attempts were made, including the 1976 case of two Viking spacecraft (left photographs taken for the Viking). Since then, after a 20-year gap, in 1997, on July 4, finally managed to go to Mars, Mars Pathfinder.

The survey of the Mars of the first time was carried on in 1965 by the sailor aircraft No. 4. People have done several attempts in succession, the two Vikings aircraft including 1976 (left picture is the photo which the Viking shoots). Hereafter, through 20 -year long interval, in 1997 July 4, No.,