The bugs, which are less than a millimetre long, feed on scales of human skin and produce allergens which are easily inhaled during sleep.
这些体长不超过一毫米的虫子以人类皮肤的鳞屑为食，并且产生的过敏原在睡眠时很容易被吸入。
The bugs, which are less than a millimetre long, feed on scales of human skin and produce allergens which are easily inhaled during sleep.
这些体长不超过一毫米的虫子以人类皮肤的鳞屑为食，并且产生的过敏原在睡眠时很容易被吸入。
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