It took a moment for Mark to recover his poise.马克过了一会儿才恢复镇静。Her plane broke down and it was 18 hours before she got there. It took her three days to recover.她乘坐的飞机出了故障，18个小时后她才到达那里。之后她花了3天时间才完全恢复过来。People used to go to s...
香港按人口平均计算的本地生产总值为25,000美元, 在亚洲名列第二.At US $ 25,000, our GDP per capita is the second highest in Asia.第二次违规者要被罚款60美元.Anybody caught breaking this rule the second time will be fined $ 60.第二种是一名火箭科学家的, 得花10万元.It was from a r...
We tried to grow some copper sulphate crystals with our children.我们想跟孩子们一起制作硫酸铜晶体。Adding sulphate to the solution will give a precipitate.将硫酸盐加入该溶液会产生沉淀.More ammonium sulphate solution is being recovered in the process o...