注意！Subtle Difference 爭議多，僅供高階英語學習者利用，也歡迎留言指出可能的錯誤。
at the risk of 最常聽到此用法，通常會接可能發生的狀況（不一定是危險）：At the risk of sounding like a pedant, I think the comma should be used in these cases.
沒有 the 的話，就是指「危險」：The children are at risk of losing their after-school program, because the school district has not been able to secure additional funding.
At Risk From
這個用法最少見，也最易讓人誤解，不過學起來的話，就能徹底搞懂 of 和 from 在英文裡的深意，以下摘錄網路上的資料：
Low-lying farmland may be at risk of flooding this weekend => 洪水可能會來。
Low-lying farmland may be at risk from flooding this weekend => 洪水一定會來，farmland 可能會處於危險之中。