可能我的孙子会是登陆火星的第一人。
可能我的孫子會是登陸火星的第一人。
Maybe my grandchild will be the first person to set foot on Mars.
登陸
Meaning
to land
to come ashore
to make landfall (of typhoon etc)
to log in (frequently used erroneous variant of 登錄|登录[deng1 lu4])
Examples
可能我的孙子会是登陆火星的第一人。
可能我的孫子會是登陸火星的第一人。
Maybe my grandchild will be the first person to set foot on Mars.