Xiānggǎng jīchǎng shì tōngguò tiándì jiànchéng de.
Hong Kong's airport was built through land reclamation.
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Hong Kong / Cantonese-influenced term. In Mainland Mandarin, 'landfill' is more often 垃圾填埋场 (lājī tiánmáichǎng) and 'land reclamation' is 填海 (tiánhǎi) when filling sea, 填海造地 (tiánhǎi zào dì) for the full process.