重點講解：
1. have problems (in) doing sth.
固定搭配；表示“做某事有困難”；
eg. The company has problems in servicing its debt.
該公司在支付債息方面有問題TcH22Dz)Oz(p5ms#o。
eg. Many people have problems getting to sleep at night.
很多人晚上難以入睡T2b3yRwhcfi4。
2. drain away
（使）流走[去]；（使）減弱；排出；
eg. We dug trenches to drain away the dirty water.
我們開溝排去污水_gv-h(u7C%=@(haSGws。
eg. If they do not want margins to drain away, operators must find ways to enhance and differentiate their offerings.
如果不希望利潤流失，運營商們必須找到辦法提高產品質量，增加產品種類Hv|f!dr;wv^pLhj。
3. make sure
一定要；設法保證；
eg. Make sure the firm is competent to carry out the work.
要確保這家公司有能力完成這項工作6O)Iy%rn3B=J*n8vT4。
eg. She looked behind her to make sure that she was not being followed.
她回頭看了身后確定沒人跟蹤她Ah]yNnk+(BcRH~G7。
4. cut away
切掉；切除；
eg. The surgeon cut away the tumor with expert skill.
外科大夫以熟練的技術把腫瘤割掉rxCu(y+VW28v。
eg. We must cut away the diseased branches from the trees.
我們得把有病害的樹枝剪除R&mIk[^E#U。