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。 If You would like to support the work of the Foundation, be sure to consider a donation that will help disseminate the Course and its teachings. All aid is a great deal appreciated. Deutsch Put your resolutions in reach by receiving Coursera Additionally—now 50% off for just a minimal waiting for link from Wiki Articles (5)