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sustantivo
The destruction of chemical weapons is a cause for serious concern over the environment - they include tens of thousands of tonnes of mustard gas, nerve gas and other chemical substances.
Kemiallisten aseiden tuhoaminen herättää syvää huolestuneisuutta ympäristön tilasta - aseissa on kymmeniä tuhansia tonneja sinappikaasua, hermokaasua ja muita kemiallisia aineita.
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