Pollution poses a great threat to our existence.
污染對我們的生存造成一大威脅。
The spread of the disease poses a great threat to our life.
疾病的傳播對我們的生命造成一大威脅。
North Korea's nuclear and ballistic missile programs pose a great threat to the peace and security of the world.
朝鮮的核試驗和導彈計劃對世界的和平和安全造成重大威脅。