from 是什么意思

from
[frCm, frEm, frm]
prep.
从, 今后, 来自, 由于

from
from
AHD:[fr¾m, fr¼m] [fr…m ] 非重读时
D.J.[fr(m, fr%m][fr*m ]非重读时
K.K.[fr(m, fr$m][fr*m ]非重读时
prep.Abbr. fm., fr.（介词）缩写 fm.， fr.
Used to indicate a specified place or time as a starting point:
从：用来表示做为起点的特定地点或时间：
walked home from the station; from six o'clock on.See Usage Note at escape See Usage Note at whence
从家走到车站；从六点钟开始参见 escape参见 whence
Used to indicate a specified point as the first of two limits:
从…：指定一特定点做为两个极限的前一个：
from grades four to six.
从四级到六级
Used to indicate a source, a cause, an agent, or an instrument:
由于：用来指定来源、起因、方法或用具：
a note from the teacher; taking a book from the shelf.
老师写的条；从架子上拿本书
Used to indicate separation, removal, or exclusion:
离开（脱离 ）：用以表示分离、转移或排除：
keep someone from making a mistake; liberation from bondage.
不让某人犯错误；解开绷带
Used to indicate differentiation