While lateral gene transfer from a trematode worm could ultimately benefit the lake sturgeon, evidence of the Trichomonas pathogen is more likely to have a negative effect.

虽说来自吸虫的基因的横向转移可能最终给湖鲟带来好处，但毛滴虫带来的更可能是负面的影响。

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However, its tough for students to improve their listening comprehension due to the effect of emotional factor, lack of listening strategies, and negative transfer of native language.

听力理解在现代社会交际过程中越来越重要，但由于他们受情感因素的影响，缺乏听力策略和技巧，还有母语的“负迁移”，使他们很难提高听力。

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