名词
中文翻译：弹丸
同义词：
['ball', 'bullet', 'projectile']
例句：
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1. The archer aimed carefully at the target and fired his arrow.
弓箭手小心翼翼地瞄准目标，射出他的箭。
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2. The ball rolled down the hill and landed in the lake.
球滚下山坡，落入湖中。
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3. The projectile hurtled through the air and pierced the wall.
弹丸在空气中疾驰，穿透了墙壁。