重點(diǎn)講解：
1. belong to
屬于（某個(gè)類別、類型或群體）；是…的成員；屬于（某團(tuán)體）；
eg. At the same time, the percentage of workers who belong to unions has also declined.
與此同時(shí)，工人隊(duì)伍中工會(huì)會(huì)員的比例也下降了。
eg. I realized that he and I belonged to different worlds.
我意識(shí)到我和他不是一路人。
2. need to do sth.
（為做成某事或正常生活）要求有，必須有，需要；
eg. The floorcovering you select will need to be impervious to water.
挑選的地板材料必須是防水的。
eg. Businesses need to train their workers better, and spend more on R&D.
各企業(yè)需要更好地培訓(xùn)工人，并且在研發(fā)方面加大投入。
3. bring out
使（某種通常不易顯露的行為或情感）顯現(xiàn)；激發(fā)；
eg. The dark bronzes wanted sunlight upon them to bring out their tinge of green.
烏黑的銅器需要陽(yáng)光的照射,才能顯出它們發(fā)綠的顏色。
eg. He is totally dedicated and brings out the best in his pupils.
他全身心地投入，最大限度地激發(fā)學(xué)生的潛能。