浩瀚 hàohàn vast (of ocean)
vast (of ocean); boundless
How to remember 浩瀚: 浩 great + 瀚 vast = vast (of ocean).
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How it is used
- Means vast and boundless - 浩瀚的海洋 (hàohàn de hǎiyáng) the boundless ocean; 浩瀚的宇宙 (the vast universe).
- Literary; used for oceans, deserts, skies, and by extension huge collections - 浩瀚的书海 (a vast sea of books).
- Conveys awe at overwhelming scale, more poetic than plain 广阔 (guǎngkuò, broad).