呻吟: to moan, to groan...
合算: worthwhile, to be a good deal, to be a bargain, to reckon up, to calculate...
试题: exam question, test topic...
排放: emission, discharge, exhaust (gas etc)...
餐馆: restaurant...
拼命: to do one's utmost, with all one's might, at all costs, (to work or fight) as if one's life depends on it...
