A tree's 'value' depends on several factors including its species, size, form, condition, quality, function, and accessibility, and depends on the management goals for a given forest.

树木的“价值” 取决于多种因素，包括其种类、大小、形状、状况、质量、功能和可达性，并取决于特定森林的管理目标。

I'd actually like to spend the bulk of this video talking about something which is neither an arrow nor a list of numbers, but also has vector ish qualities functions.

实际上 我想用这个视频的大部分时间来讨论一个既不是箭头也不是数字列表 但也具有矢量性质的函数。