提高厌氧消化速度是工业化生产沼气的核心所在.The improvement reaction efficiency is the key to methane's production on industrializationscale. "一些新能源(例如沼气)的使用,正在农村地区增加.Use of new energies such as marsh gas is increasing in the rural areas...
他们经过院长面前时脱帽行礼.They cap when they pass the president.国王进来时,宫廷里所有人都向他躬身行礼.All the men in the court bowed before the king as he entered.只是碰巧这时是嘉莉在他面前行礼.It merely happened to be Carrie who was courtesying before him....
在黑暗和嘈杂的声音中，婴儿饱受惊吓。The baby was filled with alarm at the darkness and the noise.他们被一阵嘈杂的敲门声吵醒。They were wakened by a loud knocking at the door.行李大厅拥挤嘈杂。The baggage hall was crowded and noisy....