The passengers on the bus watched sympathetically as the attractive young woman with the white cane¹ made her way carefully up the steps. She paid the driver and, using her hands to feel the location of the seats, walked down the aisle²（甬道） and found the seat he'd told her was empty. Then she settled in, placed her briefcase³ on her lap and rested her cane against her leg.

It had been a year since Susan, 34, became blind. Due to a medical misdiagnosis she had been rendered sightless, and she was suddenly thrown into a world of darkness, anger, frustration⁴ and self pity. And all she had to cling⁵ to was her husband, Mark.

Mark was an Air Force officer and he loved Susan with all his heart. When she first lost her sight, he watched her sink into despair and was determined⁶ to help his wife gain the strength and confidence she needed to become independent again.

Finally, Susan felt ready to return to her job, but how would she get there? She used to take the bus, but was now too frightened to get around the city by herself. Mark volunteered to drive her to work each day, even though they worked at opposite ends of the city.

At first, this comforted Susan, and fulfilled Mark's need to protect his sightless wife who was so insecure about performing the slightest task. Soon, however, Mark realized the arrangement wasn't working. Susan is going to have to start taking the bus again, he admitted to himself. But she was still so fragile⁷, so angry - how would she react?

Just as he predicted, Susan was horrified⁸ at the idea of taking the bus again. "I'm blind!", she responded bitterly. "How am I supposed to know where I am going? I feel like you're abandoning me."

Mark's heart broke to hear these words, but he knew what had to be done. He promised Susan that each morning and evening he would ride the bus with her, for as long as it took, until she got the hang of（熟悉某物的用法） it.

And that is exactly what happened. For two solid weeks, Mark, military uniform and all, accompanied Susan to and from work each day. He taught her how to rely on her other senses, specifically her hearing, to determine where she was and how to adapt her new environment. He helped her befriend（帮助） the bus drivers who could watch out for her, and save her a seat.

Finally, Susan decided⁹ that she was ready to try the trip on her own. Monday morning arrived, and before she left, she threw her arms around Mark, her temporary bus riding companion, her husband, and her best friend. Her eyes filled with tears of gratitude¹⁰ for his loyalty¹¹, his patience, and his love. She said good-bye, and for the first time, they went their separate ways.

Monday, Tuesday, Wednesday, Thursday... Each day on her own went perfectly¹², and Susan had never felt better. She was doing it! She was going to work all by herself.

On Friday morning, Susan took the bus to work as usual. As she was paying the fare（票价，费用） to exit the bus, the driver said, "Boy, I sure do envy you."

Susan wasn't sure if the driver was speaking to her or not. After all, who on earth would ever envy a blind woman who had struggled just to find the courage to live for the past year? Curious, she asked the driver, "Why do you say that you envy me?"

The driver responded, "It must feel good to be taken care of and protected like you are."

Susan had no idea what the driver was talking about, and again asked, "What do you mean?"

The driver answered, "You know, every morning for the past week, a fine looking gentleman in a military uniform has been standing¹³ across the corner watching you as you get off the bus. He makes sure you cross the street safely and he watches until you enter your office building. Then he blows you a kiss, gives you a little salute¹⁴ and walks away. You are one lucky lady."

Tears of happiness poured down Susan's cheeks. For although she couldn't physically¹⁵ see him, she had always felt Mark's presence. She was lucky, so lucky, for he had given her a gift more powerful than sight, a gift she didn't need to see to believe - the gift of love that can bring light where there is darkness.