重点讲解：
1. step up
增加（数量等）；提高（速度、强度等）；
eg. Radio traffic has stepped up enormously.
无线电通讯已大大增加lam^7yhs9*U;9q!OpC2。
eg. He stepped up his donations to charity.
他加大了给慈善机构的捐赠(EQUI](dns,#+pf1@。
2. for the first time
第一次；首次；
eg. There is no feeling on earth like winning for the first time.
初尝胜利滋味的感觉真是无可比拟P&W;%_#2([ZgJi;。
eg. For the first time Celia de Grey hesitated.
西莉亚·德·格雷第一次显出迟疑的神色[_ry;T(!_I]。
3. fill out
填；充实；
eg. The chief editor said they'll publish your paper if you can just fill it out a little.
主编说，只要你把论文内容稍加充实，他们就刊登YjBo#5cKV0cFxp。
eg. f you could take some time to fill out the survey, we'd appreciate it.
如果你能够有时间完成这份调查，我们将非常感谢Dx)yIH41xB。