Combined, these tools could monitor environmental conditions at hazardous work sites or detect leaks in water and gas pipelines.
两者联手，就能用以检查有害工作场所的环境状况，或探测水管和气管有无泄露。
It is unacceptable that there are still 168 million children in child Labour, 85 million of whom are in hazardous work.
让人无法接受的是，仍有1.68亿儿童从事童工劳动，其中8500万儿童从事危险工作。
It is unacceptable that there are still 168 million children in child Labour, 85 million of whom are in hazardous work.
让人无法接受的是，仍有1.68亿儿童从事童工劳动，其中8500万儿童从事危险工作。
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