单词	unsprung
释义	unsprung /ʌnˈsprʌŋ / adjective Not provided with springs: an antiquated, unsprung settee... A mattress on an unsprung base (including fixed-slat bases) should last about 10 years. He sat upon the unsprung bed and looked across the cell. Try an alternative bed-base and unsprung mattress, preferably with natural materials.
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