upper plunger
基本释义
上冲杆,上模冲
实用场景例句
工作场景
The team was unable to complete the project on time.
团队无法按时完成项目。
校园生活
She was unable to attend the meeting due to illness.
她因病无法参加会议。
He was unable to solve the math problem because it was too difficult.
他无法解决那个数学问题，因为它太难了。
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