+4 Because this could be three plus four, 3 times five, or it could be three, plus four times five.

因为这可能是，然后乘以5，也可能是，加上4乘以5。

麻省理工公开课 - 计算机科学及编程导论课程节选

So, one plus three is four, four sixths, which leaves two sixths, or one third.

加上3是4，六分之四，还剩六分之二，也就是三分之一。

麻省理工公开课 - 固态化学导论课程节选

Three plus one equals four, today, yesterday and forever.

加1等于，昨天是今天是永远都是。

耶鲁公开课 - 死亡课程节选

Three plus four times five.

加4乘以。

麻省理工公开课 - 计算机科学及编程导论课程节选

Step three to four isothermal compression, w2 delta u is going to be q2 plus w2.

第三步，到四点的等温压缩，Δu等于q2加。

麻省理工公开课 - 热力学与动力学课程节选