②express表达=ex出+press压→把(思想观点)压出来;

③impress使有印象=im(in内)+press压→把(形象)压进脑子里;

④compress压缩=com一起+press压→压到一起;

⑤depress使沮丧=de下+press压→使情绪从高到低压迫→使低落，沮丧;