並前往https://books.google.com.tw/books?id=048_Fsggt88C&pg=PA95&lpg=PA95&dq=usa+50+off%E8%A9%95%E5%83%B9&source=bl&ots=KznrIUhxbL&sig=ACfU3U076tfH_Kk_fpTz52psi-Q9Q_6Ktg&hl=zh-TW&sa=X&ved=2ahUKEwjxid3k9PX8AhX7mFYBHbiQCVkQ6AF6BAg7EAM