有帮助的

He's a useful person to know.

他是个应该结交有帮助人。

Some practice in the deft use of words may well be ancillaryto the study of natural science.

熟练使用文字练习对于自然科学研究也是有帮助。

Your advice was a great help to me.

你建议对我有很大帮助。

This helps to explain the unfortunate experience of a certain agriculturist from the U.S. assigned to duty in another country.

这对解释某位被分配到另一国家去工作国农业学家不幸遭遇是有帮助。

Most fishes have unstriated rays along the anterior part of the dorsal and ventral edges (leading edges) of the caudal fin.

在大多数鱼类尾鳍，沿著背侧与腹侧缘前部具有无条痕鳍条。在一些鱼中，例如鰕虎鱼其有条痕与无条纹软条数量比在鑑定上是有帮助。

The meditative response in which he performs them gives him that vital loosening and equability of all his powers, that collectedness and presence of mind, without which no right work can be done.

然形式不是修行目，有时候他们对修行是很有帮助。作者有一段对修行仪式解释也非常到位。