Knowledge of Russian language is preferred but not required.
俄语语言的知识是首选，但不是必需的。
Some spoken English is preferred, but not required.
一些英语口语是首选，但不是必需的。
Qualification: Degree in Science preferred, but not required Knowledge of Chemistry, Biology, Physics, Computer Science, or Environmental Science.
资格：最好有科学文凭，但不需要懂化学丶生物丶物理丶电脑丶或环境科学。
Good English reading and writing skills, not required, but preferred.
良好的英语读写能力更佳，但不是必须的。
Good English reading and writing skills, not required, but preferred.
良好的英语读写能力更佳，但不是必须的。
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