Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
abortion - n. a medical procedure used to end a pregnancy
detect - to discover or notice
challenge - v. to question the authority
dissent - v. to publicly disagree with an official opinion
precedence - n. the condition of being more important than something else
opportunity - n. a situation in which something can be done
complaint - n. a formal charge saying that someone has done something wrong
detrimental - adj. causing damage or injury
scrutinize - v. to examine carefully
autonomy - n. the state of existing or acting separately from others
