环: ring, hoop, loop, (chain) link, classifier for scores in archery etc, to surround, to encircle, to hem in...
间隔: gap, interval, compartment, to divide, to separate, to leave a gap of (two weeks, three meters etc)...
白: white, snowy, pure, bright, empty, blank, plain, clear, to make clear, in vain, gratuitous, free of charge, reactionary, anti-communist, funeral, to stare coldly, to write wrong character, to state...
效率: efficiency...
随心所欲: to follow one's heart's desires, to do as one pleases (idiom)...
心急如焚: One's heart is torn with anxiety., be burning with anxiety, nervous with worry...
公园: park (for public recreation)...
列入: to include on a list...
书: book, letter, document, to write...
差额: balance (financial), discrepancy (in a sum or quota), difference...