Children are in a crucial period of growth and development. Blood lead can cause multiple system severe damage, and produce irreversible damage especially in center nervous system.

儿童正处于生长发育的关键时期，血铅可以造成多系统严重损害，尤其对中枢神经系统产生不可逆的损害。

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Children are in a crucial period of growth and development. Blood lead can cause multiple system severe damage, and produce irreversible damage especially in center nervous system.

儿童正处于生长发育的关键时期，血铅可以造成多系统严重损害，尤其对中枢神经系统产生不可逆的损害。

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