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| 少年儿童自然界研究者; 青少年自然科学家 | |||
| 少年儿童自然界研究小组组员; 少年自然科学家 | |||
| 少年〔儿童〕自然界研究组组员; 少年〔儿童〕自然界研究者 | |||
| юных натуралистов: 10 phrases in 2 subjects |
| Education | 5 |
| General | 5 |
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