皮革: leather...
拟: to plan to, to draft (a plan), to imitate, to assess, to compare, pseudo-...
医学: medicine, medical science, study of medicine...
共: common, general, to share, together, total, altogether, abbr. for, Communist party...
版本: version, edition, release...
闲话: casual conversation, chat, gossip, to talk about (whatever comes to mind)...
偷: to steal, to pilfer, to snatch, thief, stealthily...
星期日: Sunday...
预先: beforehand, in advance...
服: dose...
