並前往https://books.google.com.tw/books?id=DdWCDwAAQBAJ&pg=PA16&lpg=PA16&dq=usa+50+off%E8%A9%95%E5%83%B9&source=bl&ots=b3PnX4xGFO&sig=ACfU3U0cnuSQWS0HFq88IGK-h6XKyQzuKQ&hl=zh-TW&sa=X&ved=2ahUKEwjxid3k9PX8AhX7mFYBHbiQCVkQ6AF6BAheEAM