announce v. /declare v. /claim v.

announce的意思是“通知，宣布(結果，決定等)”;

declare的意思是“宣布(公告，法律等)，聲明”;

claim意為“聲稱，要求得到，認領”。

例：She announced that the singer would give one extra song.

她宣布歌手將再加唱一首歌。

The United States and China had declared their normalization of diplomatic relations.

中美雙方宣布了雙邊外交關系的正常化。

They declared martial law in the mining communities.

他們宣布對礦區實行軍事管制。

If anybody owns this camera, will he or she please come forward and claim it?

請這部相機的失主前來認領。

She claims to be as good a pianist as Themelis!

她聲稱自己的鋼琴彈得與Themelis一樣棒。