While not particularly harmful, it's certainly not something you want the boss to see.

虽然伤害不太大，但您肯定不希望自己的老板看到这种东西。

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While multiple faults occur in complex power system, the pilot protections could correctly operate or not, and incorrect operation of the pilot protection is harmful to the power system.

复杂电力系统发生复故障时，方向高频保护可能正确动作也可能不正确动作，而继电保护的不正确动作将直接危害电力系统的安全稳定运行。

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While nail biting is not generally harmful, if you attack the cuticles you can risk bleeding and bacterial infection.

虽然啃咬指甲通常不会使人受伤，但如果你咬伤了指甲周围的皮肤，仍然会导致出血并可能造成细菌感染。

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Natural measles infection, while not harmful to most children, carries a slight risk of permanent disability - or even death.

BBC: Childhood measles may protect from asthma

While analysis of spirulina has shown that it does not contain a harmful toxin called microcystin, other blue-green algae has found to be frequently contaminated.

BBC: Algae may boost immune system

While we applaud the efforts to reduce the presence of toxic chemicals in Avon products, we maintain that continuing to build brand recognition through breast cancer cause-marketing while continuing to sell products that are not completely free of toxic chemicals is a harmful contradiction.

FORBES: Pinkwashing: Researchers Take On Avon In Breast Cancer Battle