因为质量比地球小的行星迁移速度缓慢，所以他们更易于在气盘中存活。

Planets smaller than Earth can easily survive in the disk because they migrate slowly.

youdao

因为质量比地球小的行星迁移速度缓慢，所以他们更易于在气盘中存活。

Planets smaller than Earth can easily survive in the disk because they migrate slowly.

youdao