Although some sightings of UFOs are difficult to explain, most can be explained quite easily.

虽然有些目击 UFO的现象很难解释，但大多数都可以很容易地解释。

youdao

Although some sightings of UFOs are difficult to explain, most can be explained quite easily.

虽然有些目击 UFO的现象很难解释，但大多数都可以很容易地解释。

youdao