So, in fact, you know, when you plug in these things, normally you get a quantity that's of a form, something times t plus a constant because that's what you plug into the equation of a plane.
事实上，代入这些之后，通常可以得到这种形式的值，有时候是t加上一个常数，因为这是你代入平面方程的。
These little things aren 't important in themselves.
这些小事情本身并不重要。
I can 't do tadpoles again, they keep these things on file.
我不能再用蝌蚪了，学校有记录。
T summarizes:We use the present continuous tense to talk about things that are happening now or these days.
现在进行时表示现在（说话瞬间）或现阶段正在进行或发生的动作。
ASHLEY: Yes, I care. Oh, can "t we go away and forget that we ever said these things?"
艾希礼：是的，我喜欢。哦，我们还是走吧！忘掉我们刚才说的话行不行？
ASHLEY: Yes, I care. Oh, can "t we go away and forget that we ever said these things?"
艾希礼：是的，我喜欢。哦，我们还是走吧！忘掉我们刚才说的话行不行？
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