Answer:
Writing a podcast script is a key way to ensure your audio is clear, tight, and valuable for your listeners. You don't have to write out every word you intend to say, but it's important to have notes for each episode to keep you on track, especially if you're new to podcasting.
Explanation:
Hope this helps
What a search engine is something that you can search things on, Bing is a search engine
I think that the italicized word is "trained" as it's a participle and there is no other participle or gerund! A participle is a verb form that can be used to modify a noun.