宴会始终充满亲切友好的气氛: the banquet was full of cordial and friendly atmosphere from beginning to end
还原: 1.(恢复原状) return to the original condition or shape; restore2.[化学] (还原作用) reduction; deacidizing; deoxidation; recondition; electronation; regeneration; revivification; resetting; vatting;
还原性状: behaviour under reducing conditionsreduction behaviour
