词典新增455个新词

evolve - v. to change or develop slowly

informal - adj. relaxed in tone and not suitable for serious speech or writing

abbreviation - n. a shortened form of a word or name that is used in place of the full word or name

respond - v. to do something as a reaction to something that has occurred

sandwich - n. two pieces of bread with something in between

marshmallow - n. a soft, white, sweet food made of sugar and eggs

spice - n. a substance that is used in cooking to add flavor