You can realize your dream through online travel.

You can realize your dream by traveling online.

Sentence analysis:

Sentence tense: simple present tense, indicating the present action or state.

Sentence structure: subject+modal verb+verb reason+object+adverbial.

Sentence features: the sentence is a typical subject-predicate-object structure, and the expressive ability of modal verbs in the sentence is: yes.

Use the phrase: by ... with the help of ...