investment cost的用法和樣例：
例句
- After this technology is mature,if fracturing material is made domestically,investment cost will be decreased.
如果該技術成熟后壓裂材料實現國產化，可縮短投資費用。 - It improves digester cost operation and reduces capital cost wherever sludge digestion is utilized.
當採用污泥消化時，它可改進消化器的運行並降低其基建投資費用。
