In such cases, the original composition of the bone or shell remains, but the fossil is made harder and more durable.
在这种情况下,骨骼或外壳的原始成分会保留下来,但化石会变得更坚硬、更耐用。
They are often more comfortable and more durable than civilian clothes.
它们通常比便服更舒适、更耐穿。
Those with higher thread counts are softer and more durable.
高密度的织布床单更柔软也更耐用。
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