重點(diǎn)講解：
1. specialize in 專門從事；專門經(jīng)營；專門研究；專攻；
例句：Many students specialize in engineering.
許多學(xué)生專攻工程學(xué)d6TJP(k,Bo3H。
2. right now 現(xiàn)在；此時(shí)此刻；
例句：Right now, jeans are at a discount.
現(xiàn)在牛仔褲打折銷售w1=GaJxo,Tnu@。
3. cobble together 拼湊；迅速籌集；
例句：Analysts expect Japan to cobble together a workable energy grid in the next few weeks.
分析者預(yù)計(jì)日本將在接下來的幾周內(nèi)迅速建成一個(gè)可用的能源網(wǎng)絡(luò)77umjz|@6^44nr7%RD^。
4. back and forth 來回；往返；
例句：The Spring Festival was approaching. A lot of people were travelling back and forth.
春節(jié)到了，來往的旅客很多.=cwja6HE*xL-!(d。