阅读原文：
�标题 Long list of presidents have been shot or shot at

正文 Former President Donald Trump fell to the ground Saturday, clutching his face after what sounded like gunfire at a rally in Pennsylvania. Blood could be seen on his face as he was carried away by Secret Service. Multiple presidents 
and former presidents and candidates for president have been attacked in US history.


�知识点 shoot at
to fire a gun or other weapon; to fire sth from a weapon开（枪或其他武器）；射击；发射
• Someone shot at the car, but luckily no one was hurt. 有⼈朝车开枪，但万幸没有⼈受伤。

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