【问】 one of the biggest bars standing in the way of developing a vaccine
 [原译]培养疫苗的道路上的最大障碍之一(《英汉辞海》，P.402)
 in the way of是指“在……道路上”吗?
 【答】 in the way (of)与on the way (of)的意义是不同的。in the way是指“碍事”、“挡路”、“妨碍……”。例如：
 1. Although he thought he was helping us prepare the dinner，he was only in the way.(Whitford)
 尽管他认为自己在帮我们准备晚餐，但是他却只是妨碍别人。
 2. You mustn’t play near the house today： you’ll get in the way of the workmen.(Wood)
 你今天不许在房子附近玩;你会妨碍工人们干活的。
 上句中的stand in the way of (in one’s way)是一个常见成语，意思是“阻挠”、“妨碍”：
 1. The only thing now standing in the way of further progress is lack of money.(DEI)
 现在妨碍进一步发展的唯一的一件事就是缺乏资金。
 2. I do not wish to stand in the way of your advancement. (Wood)
 我不愿意妨碍你的提升。
 on the way (to)是指“在去(回)……的路上”、“动身往”、“正在走向”。
 1. I have some hopes that Mr. Sharp will come to Paris on his way back to England.(Yeats)
 我希望夏普先生在返回英国的途中能来巴黎一趟。
 2. They were soon on the way to the station. (Galsworthy)
 他们很快就动身去了车站。
 3. He's on the way to success.(ALD)
 他正在走向成功。
 on the way还有另一个意思：“即将到来”：
 1. Better weather is on the way.(Wood)
 好天气即将到来了。
 2. Christmas is on the way; we are in October already. (Henderson)
 圣诞节就要到了;现在已经到十月了。
 [试译]妨碍培养疫苗的最大障碍之一
 请做下面的托福题：
 ______ to school，I met an old man.
 A. On the way B. By the way
 C. In my way D. Using the way(TOEFL，78. 4)