A large opening (small f-stop number) gives you a very shallow DOF, and a small opening (big f-stop number) gives you a much deeper DOF.

一个大洞的开启(小f值)会带给你浅度景深，而一个小的开启(大f值)则会给你一个深度景深。

youdao

That data provided an estimated average winter temperature in southern Baffin Bay of about 3.3 degrees C (37.9 F).

这些数据提供了巴芬湾南部冬季平均温度的估计值，约为3.3度（华氏温度37.9度）。

youdao

What I do at any point is project F to the tangent direction, I figure out how much F is going along my curve and then I sum these things together.

我所做的就是把F投影到切向量方向上，得出F沿着曲线的值,然后再把这些加起来。

youdao

> >> David: F, c because I want to tell printf, "Use these values in those placeholders, these values in those format strings."

>，【无法辨认的声音】,>>，大卫：“f，c“因为我想告诉printf，“在那些占位符,和那个格式下打印这些值“

哈佛公开课 - 计算机科学课程节选

We are constantly looking for values of F and we're constantly looking for responses or bodies to a known force.

我们不断地寻找 F 的值,我们不断地探索已知力对物体的作用

耶鲁公开课 - 基础物理课程节选

f Well, call toupper pass this lowercase F F to this function called toupper it's going to return capital F and so what do I assign to s2 bracket zero?

调用toupper函数，传递这个小写,然后返回的是大写的,那么我对s2【0】赋值多少？

哈佛公开课 - 计算机科学课程节选