Please keep the shipping boxes vertical so the glass bottles inside do not break.

請讓貨運箱保持直立，以免裡面的玻璃瓶破掉。

The new office chairs help employees keep their backs vertical during long meetings.

新的辦公椅能幫助員工在長時間開會時保持背部挺直。

Store your carry-on bag in a vertical position under the seat in front of you.

請將您的隨身行李直立放在前方座位底下。