access的形容詞形式怎么寫

　　The remote desert area is accessible only by helicopter.

　　只有乘直升機才能進入那遙遠的荒漠地區。

　　Campuses are usually accessible by public transportation.

　　到校園通常可以乘坐公交。

　　The causeway to the island is only accessible at low tide.

　　通往該島的堤道只有在枯潮時才能通行。

　　The new museum must be accessible by public transportation.

　　新博物館必須能通公共交通。

　　If a computer user fails to log off, the system is accessible to all.

　　如果一位電腦用戶沒有登出，所有人都可以進入該系統。