稀鬆

poor / sloppy / unconcerned / heedless / lax / unimportant / trivial / loose / porous

rare / uncommon / watery / sparse

loose / to loosen / to relax / floss (dry, fluffy food product made from shredded, seasoned meat or fish, used as a topping or filling)

cancellous bone / trabecular bone / spongy bone