bailing block
基本释义
汲筒滑车
实用场景例句
学术讨论
The teacher demonstrated the experiment to the class.
老师向全班演示了这个实验。
校园生活
They demonstrated their skills during the science fair.
他们在科学展览期间展示了他们的技能。
社会活动
Protesters demonstrated against the new policy in the square.
抗议者在广场上示威反对新政策。
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