The binaryvar data type is a variable-length opaque type with a maximum length of 255 bytes.

binaryvar数据类型是一种变长的opaque类型，最大长度为255字节。

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Lacquerwork: Any of a variety of decorative objects or surfaces, usually of wood, to which a coloured, highly polished, and opaque type of varnish called lacquer has been applied.

漆器：表面涂有彩色、高度磨光的不透明漆的装饰性对象的统称，通常为木制。

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This is another opaque handle type whose contents are used only by the library.

这是另外一个不透明的句柄类型，其内容只由库使用。

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Initially open with glass walls, the master-bedroom suite can be closed off from the rest of the home with a type of glass that turns from clear to opaque at the flip of a switch.

WSJ: Modern Homes: A Bachelor Reboots