Said to contain意思

"Said to contain" is an expression used to indicate that something is reported, believed, or claimed to have a certain content, ingredient, or characteristic, but without direct evidence or verification. It implies that the information comes from a source or is based on hearsay rather than personal knowledge or verification.

For example:

"The package is said to contain rare books from the 17th century."

In this sentence, the speaker is relaying information they have heard or read about the contents of the package, but they may not have seen the books themselves or have firsthand knowledge of the contents.

The phrase can also be used in a more general sense to mean "it is said that" or "it is believed that":

"Scientists say that the new vaccine is said to contain fewer side effects than previous versions."

In this case, the speaker is conveying information about the vaccine's purported characteristics based on reports or claims from scientists, but the speaker may not have direct experience with the vaccine or its development process.