會影響青少年發展的外在因素有很多，尤其是環境與周遭人們對他們影響至深。

會影響青少年發展的外在因素有很多，尤其是環境與周遭人們對他們影響至深。

結果 (英文) 1:

There are many external factors that can affect the development of young people, especially the environment and people around them have a deep impact on them.

結果 (英文) 2:

There are many external factors that will affect the development of teenagers, especially the environment and people around them.

結果 (英文) 3:

There are many external factors that affect the development of young people, especially the environment and the people around them have a profound impact on them.