重點講解：
1. used to do sth. 過去常常；過去曾；
例句：There used to be a horde of startups trying to enter this market but the energy is largely gone.
過去有一堆小公司試圖加入這個市場，但現在那股活力沒有了E3ZQ,=W@J%~ngT@~c。
2. catch up with 了解近況；敘舊；
例句：The survey revealed two thirds of women felt guilty as they did not catch up with their friends often enough.
調查揭示，三分之二的女性因為沒能和朋友經常聯系而感到內疚#[Ka-ZJjDsz8。
3. at least （表示相對于不利條件或糟糕情形）起碼，不管怎樣；
例句：This at least shows that some people in the music industry is still quite a sense of humor.
這至少證明，在音樂行業有的人還是頗具幽默感的+0^K9!m[q7。
4. be in touch with (與…)聯絡；(與…)聯系；
例句：I realized that Twitter was a very nice way to be in touch with your fans as well as inspire people who are going through tough times.
我覺得twitter是與粉絲們保持聯系的一個很好的途徑，而且也很便于鼓勵那些有困難的人們Onrw4EP&vf;q=GJz)。