眼界 yǎnjiè field of vision
(literally and fig.) field of vision; scope; horizon
How to remember 眼界: 眼 eye + 界 boundary = field of vision.
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How it is used
- One's horizons / breadth of outlook - 出国留学开阔了他的眼界 (chūguó liúxué kāikuò le tā de yǎnjiè) studying abroad broadened his horizons.
- Almost always with 开阔/开 (broaden) or 大开: 大开眼界 (dàkāi yǎnjiè) a real eye-opener. Figurative scope of experience, not literal eyesight.