Turn off the phones, plug in your headphones (to block out sound), put up a “do not disturb” sign, turn off your email notifiers, maybe put your email in vacation mode.
关掉手机、摘掉耳机(或者设成静音),摆出一个“勿扰”标志,关掉邮件题型软件,或者把邮箱设为假日模式。
(By the way, [shameless plug], you can sign up for the beta at codebubbles.org).
(顺便说一句,[厚着脸皮做广告喽],你可以在codebubbles.org注册下载)。
Because you did not sign your plug-ins, they do not have signatures.
由于您没有对插件进行签名,所以它们没有签名。
Infinity is the force when we're thinking about it and our brains, negative infinity is when we actually plug it into the equation here, and the reason is the convention that the negative sign is just telling us the direction that the force is coming together instead of pushing apart.
说力有多大时,我们想到的,是无穷大,而方程解出来的,是负无穷,这是因为习惯上,我们用负号表示力的方向,是相互吸引而不是相互排斥的,所以我们可以用库仑定律。
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