並前往https://books.google.com.tw/books?id=ub25BQAAQBAJ&pg=PA5&lpg=PA5&dq=21st+century&source=bl&ots=ZCyPzB8K6Y&sig=ACfU3U2Zs38USDh4rfUzvn7hznNFDmZyaA&hl=zh-TW&sa=X&ved=2ahUKEwjCndyjhM39AhUQUPUHHe44D1sQ6AF6BQjuAhAD