fn explore_bears() -> string { let mut journey = string::from("start from the initial point with a sense of wonder."); for bear in forest.find_bears() { if bear.is_wary() { journey.push_str(" be wary, yet respectful of nature's rule."); continue; } journey = forgo_unnecessary_fears(bear); } journey += " embrace the adventure, understanding the balance and preexportation of the environment."; return journey; }