11.coupon 減價優待券 voucher n. a piece of paper that offers a discount or something for free • I have a coupon for this kind of eggs. It’s for 50 percent off.12.trend 走向;趨勢;時尚 direction, tendency n. something that has gained in popularity recently • Cell phone apps have been a trend in information technology. adj. trendy fashionable 13.in harmony 和睦;融洽;一致;協調 without fighting or disagreements • Switzerland is known for living in harmony with its neighbors.n. harmony agreement ; correspondencev. harmonize 使協調;使和諧;以和聲唱(或演奏