英语语法分析

Artificial field planting would benefit the growth of Fraxinus mandshurica.

人工定株有利于水曲柳萌条的生长。

Artificial field planting would benefit the growth of Fraxinus mandshurica, when 1 to 4 sprouts were reserved;

人工定株有利于水曲柳萌条的生长，以保留萌条1～ 4株较好；

Samara a nut or achene whose pericarp is extended to form a wing for wind dispersal, e. g. Ash (fraxinus excelsior).

翅果：指坚果或瘦果中果皮延伸成翼状，以利于风媒传播的果实类型。如白蜡树的果实(欧洲白蜡树)。