莫妮卡拿起她的伯罗圆珠笔，放在牙齿间转动着。Monica picked up her Biro and revolved it between her teeth.他吧嗒一声把笔帽扣在了圆珠笔上。He snapped the cap on his ballpoint.市场上圆珠笔泛滥.There is an overflow of cheap ballpoint pens in the market....
The painted murals in the Dunhuang Grottoes along the ancient Silk Road in China form the world's longest painted corridor , with a total of 45,000 square metres of painted murals.中国丝绸古道上的敦煌莫高窟内的壁画是世界最长的石窟画廊.窟内有壁画45...