Police Reaches US Residents through China's Weibo

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unusual – adj. not normal or not common; not often done, seen or heard ("After the divorce, his behavior became so unusual that his friends barely recognized him.")

security – n. freedom from danger or harm; protection; measures necessary to protect a person or place ("Security was increased in the city.")

volunteer – n. (a verb or a nown) a person who chooses to do something without being asked, usually without being paid ("She volunteers every weekend reading to sick children in the hospital." Or "She is a volunteer at the hospital where she reads to sick children.")

communication – n. the act or process of using words, sounds, signs, or behaviors to express or exchange information or to express your ideas, thoughts, feelings, et cetera, to someone else ("The key to every good relationship is communication.")