know from

基本解釋

I know from conversations with other smokers that this is not unusual.
我知道，這是一場(chǎng)對(duì)於其他吸菸者的不尋常的談話。
Dieticians know from their experience that it is very difficult to reduce the usual quantity of food, which is the reason of most failures.
膳食專家從他們的經(jīng)騐知道，要減少日常的進(jìn)食量是十分睏難的。這正是大多數(shù)人減肥失敗的原因。
You know from this result that inserting this type of string would not result in a successful login attempt, so the site is not vulnerable to this type of attack.
從這個(gè)結(jié)果可以知道，插入該類型的字符串不會(huì)導(dǎo)致成功的登錄嘗試，所以站點(diǎn)不容易受到這種類型的攻擊。

We see that you know from everyone,they say their interest in science begins before the age of eleven.
So, we know from our calculation that we can do over here, that this bond is polar.
我們通過計(jì)算都知道,這個(gè)鍵是非極性的。
麻省理工公開課 - 固態(tài)化學(xué)導(dǎo)論課程節(jié)選
it just so happened that two other people I know from back home transferred the same time I did.
剛好我在家認(rèn)識(shí)的兩個(gè)人也和我同時(shí)轉(zhuǎn)過來了。
畱學(xué)生的適應(yīng)期 - SpeakingMax英語口語達(dá)人

Ms. GALBREATH: ...it's a different mind-set from the people that I know from the Midwest.
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