hardscrabble (n.) hardness (n.) hardly (adv.) hardihood (n.) hardener (n.) hardened (adj.) harden (n.) hardcore adj. 硬核的；赤裸裸描写性行为的 n. 硬核；硬底层；碎砖垫层；硬核摇滚乐hardball (n.) hardback (n.) hard-working (adj.) hard-wired (adj.) hard-up (adj.) hard-shell (adj.) hard-on (n.) hard-nosed (adj.) hard-line (adj.) hard-hearted (adj.) hard-headed (adj.) hard-fought (adj.)