- mandatory or optional英语什么意思:必选或可选的
相关词汇的读音
- "mandatory attribute"怎么读
- "mandatory target"怎么读
- "mandatory control"怎么读
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- "mandatory breath"怎么读
- "mandatory clause"怎么读
- "mandatory sanction"怎么读
- "mandatory standard"怎么读
- "mandatory offer"怎么读
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- "mandatory norm"怎么读
- "mandatory offer"怎么读
- "mandatory order"怎么读
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