turn one's hand overとは 意味・読み方・使い方

To solve such a problem that when operating a bicycle in the rain holding an umbrella with one hand or standing the umbrella on a handle part through an attachment, it is very risky, since the handle bar is wobbled and the bicycle may turn over, and eventually the bicycle may cause an accident of contact with an automobile or the like.例文帳に追加

雨天時に片手に傘を持って自転車を運転し、又、ハンドル部にアタッチメントを取り付け傘を立てて乗っていますが、ハンドルがふらついて転倒し、自動車等と接触事故が起こりやすくとても危険である。 - 特許庁