例句與造句

1. The Fleischer ring, caused by deposition of the iron oxide hemosiderin within the corneal epithelium, is subtle and may not be readily detectable in all cases, but becomes more evident when viewed under a cobalt blue filter . and so this finding, though a classic sign of the disease, tends not to be of primary diagnostic importance.
2. It's difficult to find cobalt blue filter in a sentence. 用cobalt blue filter造句挺難的