並前往https://books.google.com.tw/books?id=8oPnZ8q9lvcC&pg=PA26&lpg=PA26&dq=focus%E4%BA%94%E9%96%80&source=bl&ots=W8_gNR3sXr&sig=ACfU3U32CcbAn8CtKBOilIcE6xsCv3kFtw&hl=zh-TW&sa=X&ved=2ahUKEwiatM6C6PaBAxVdgP0HHa2-Al0Q6AF6BQjBARAD