This is a photograph from the Thau Yong Collection. It depicts eight men, the man from the second left is giving a speech while the other men looks on.
dict.youdao.com
Sara喜欢一上一下地干,而我却喜欢一左一右地干。
Sara likes doing it up_and_down, _and_I like doing it left to right.
www.xyzdict.com
这里面你可以使用左一右按钮来获得前进或后退。
Inside this you can use the left an right buttons to get forward or backwards.