The Library does not restrict access to materials based on age. It is the parents or guardians responsibility to select age appropriate materials for their children.
图书馆内并不依年龄限制浏览内容。父母亲或监护人应负责监督未成年人选择适合他们年龄的书籍资料。
It should be helpful for selecting appropriate materials for nanotexturing of thin films by ultrafast lasers.
本文的研究将有助于利用超快激光对薄膜材料进行纳米构造。；
Thank you for your inquiry, but we cannot make you an offer right now because we are presently unable to obtain appropriate materials.
谢谢贵方询价，但我们不能马上发盘，因为目前我们得不到合适的原料。
With increased awareness and knowledge of these impacts, efforts are being made to avoid these adverse effects. Among these is the selection and specification of appropriate materials.
随着对这些影响的意识和知识的增加，人们做出了各种努力以避免产生不利的后果，其中的一种方式就是选择合适的材料并加以详细说明。
With increased awareness and knowledge of these impacts, efforts are being made to avoid these adverse effects. Among these is the selection and specification of appropriate materials.
随着对这些影响的意识和知识的增加，人们做出了各种努力以避免产生不利的后果，其中的一种方式就是选择合适的材料并加以详细说明。
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