But as the oil of bitter almonds is poisonous when taken in too large a quantity, it can only be bought with a doctor's prescription in this country.

不过由于苦杏仁油大量摄入时会致人中毒，所以在美国只有拿着医生的处方才能买到苦杏仁。

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This mixture is poisonous if used too often on the victim.

这个混合物是毒的，如果太经常使用在受害者。

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It has been acknowledged that nickel has a poisonous effect on FCC catalyst in China, but it has still not recognized that Vanadium has a poisonous effect on the FCC catalyst too.

镍对催化裂化催化剂的中毒作用已被国内认识，但钒对催化裂化催化剂的中毒影响尚未引起人们重视。

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But phenols are poisonous to human cells, too, and thus have to be neutralised.

ECONOMIST: The human microbiome