mucus secretion increase more
粘液分泌增多
以上为机器翻译结果，长、整句建议使用 人工翻译 。
With the expansion of host range, surface of fish becomes dull, mucus secretion increase more, and the fish become weaker due to loss of appetite.
随着寄生范围的扩大，体表失去光泽，粘液分泌量增多，鱼因食欲减退而变得虚弱。
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