並前往https://books.google.com.tw/books?id=2PHwDwAAQBAJ&pg=PA128&lpg=PA128&dq=focus+mk4%E5%B7%A5%E7%A8%8B%E6%A8%A1%E5%BC%8F&source=bl&ots=5AM2pXaASR&sig=ACfU3U02_BZAEYCn4WGonQuP4mnlHePKhg&hl=zh-TW&sa=X&ved=2ahUKEwiXxYDSpbWAAxVOF1kFHRedC9MQ6AF6BQiSARAD