Some of the beads may be doped with a moisture indicator, such as cobalt (II) chloride, which is toxic and may be carcinogenic.
一些珠子可能会添加水分指示剂，如钴(II)氯化物，这是有毒的，可致癌。
Some of the beads may be doped with a moisture indicator, such as cobalt (II) chloride, which is toxic and may be carcinogenic.
一些珠子可能会添加水分指示剂，如钴(II)氯化物，这是有毒的，可致癌。
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