manly costs的用法和样例：
例句
- So labor costs per ton of guano will rise in real terms unless technological advances allow more efficient use of labor.
所以每吨海鸟粪的人工成本以真实方式计会上升，除非技术进步允许更有效率的运用人工。 - The higher labor costs for milling and weaving in Europe, where more traditional manufacturing methods are employed, account for the higher purchase price.
欧洲采用较传统的生产方式，加工与纺织的人工成本因而较昂贵，售价也较高。
