Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
maintenance - n. the act of keeping property or equipment in good condition by making repairs, correcting problems, etc.
gender - n. the state of being male or female
gender-neutral - adj. describing a word or expression that cannot be taken to refer to one gender only
code - n. a set of laws or regulations
reflect - v. to show (something) : to make (something) known
linguistics - n. the study of language and of the way languages work
dialogue - n. a conversation between two or more people
gotta - used in writing to represent the sound of the phrase got to when it is spoken quickly
habit - n. a usual way of behaving
figure out - phrasal verb. to understand or find (something, such as a reason or a solution) by thinking
