1·You can always use opaque glass if you need to block a street view.
如果你需要挡住外面的街景，你随时可以使用不透明玻璃。
—— 《柯林斯英汉双解大词典》
2·The clusters diffracted light, making the solution opaque.
这团物质衍射光簇，产生了不透明的溶液。
3·That might be one reason that opaque bottles haven't really caught on.
这可能是不透明瓶子没有真正流行的一个原因。
4·The windows were nearly opaque, with a scrim of some sort of pale fluff or dander.
窗户几乎是不透明的，上面有层像是泛白的绒毛或毛屑。
5·The BLOB domain can be used when the message is treated as opaque, not parsed, and simply routed.
当消息不透明的、不解析或者只需要路由时，可以使用 BLOB 域。