However, the home school Legal Defense Association says the percentage of black home-schooling families has increased, though hard Numbers weren't available.
然而，家庭学校法律辩护协会称，让孩子在家“上学”的黑人家庭比例有所提高，但目前还无法得到相关的确切数字。
Labour represents around 70% of Japanese business costs: though hard on individuals who are sacked, the rise of non-regular workers has let firms cut costs fast.
劳动力成本约占到日本商业总成本的70%：虽然对被解雇的人有些残酷，非正式工的增加让企业能更快地削减成本。
Even though hard disks are much cheaper compared to 15 years ago when a 250 Megabyte hard disk cost a couple hundred dollars, adding disk drives still incurs a cost to the organization.
虽然与十五年前相比(那时候一个250MB的硬盘就要花费200美元)，硬盘的成本降低了很多，但是对于企业来说，增加磁盘驱动器仍然需要一笔不容忽视的成本。
Though hard as it is, technological innovation is the lifeline of enterprises.
企业的技术创新贵在持续，也难在持续。
Though hard as it is, technological innovation is the lifeline of enterprises.
企业的技术创新贵在持续，也难在持续。
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