总之，易货贸易是一种效率很低的交易形式。Overall, barter is a very inefficient means of organizing transactions.非国有企业逐渐挤掉了效率低下的国有企业。Non-state firms gradually elbow aside the inefficient state-owned ones.能源价格一直维持低水平，所以能源利用效率很低。Energy prices h...
唯一的声响是冰层噼噼啪啪碎裂的声音。The only sound was the crackle of breaking ice.人们开始四下察看，想弄清楚那声响来自何处。People began looking across to see where the noise was coming from.她一直在房间里工作，直到有声响打扰了她。She'd been working in her room till a nois...