The toxicity of lead can be hard to detect, except in cases of acuteleadpoisoning.
毒性的铅可以难以察觉，除非发生急性铅中毒。
2
However, what struck Beattie most were abnormally high levels of lead found in samples of hair, indicating acuteleadpoisoning.
然而，最令比泰吃惊的是在头发标本中发现比正常要高得多的铅含量，这为铅中毒。
3
In certain instances, cases of acutepoisoning may still be seen in children who are chronically exposed and whose blood lead levels reach levels that interfere with normal functions.