In the dark my sense of hearing becomes so acute.黑暗中我的听觉变得异常灵敏。I managed to keep my parents in the dark about this.我设法对父母瞒下了此事。Prudent people are not going to take a leap in the dark.小心谨慎的人是不会轻易冒险的。...
an increase in annual precipitation年降水量的增加Techniques for controlling particulates include filtering, washing, centrifugal separation, and electrostatic precipitation.控制颗粒污染物的技术包括过滤 、 洗涤 、 离心分离 、 静电沉降.Guitar's experi...