Allow a clear view to both sides.
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Prevent air from passing through it.
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Be tight enough to prevent glasses from fitting underneath it.
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Should not fasten too tightly.
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Allow a clear view to both sides.
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Prevent air from passing through it.
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Be tight enough to prevent glasses from fitting underneath it.
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Should not fasten too tightly.
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Answer correctly : 0 | Wrong : 0
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