系統偵測到你的電腦網路有異常流量。本頁面的目的是驗證有關請求是否由你本人發出，確保非由機器人操作。 The order by which students choose to utilize the guides, and the ways in which they research them, depend upon their distinct demands and Tastes. Put your resolutions in arrive at by finding Coursera Additionally—now 50% off for your constrained time. With entry to ten,000+ packages, su... https://www.youtube.com/channel/UCTleG6-484F7WHZD0hAjRRw