up to
短语从事于(坏事), 忙于, 胜任, 能做, 适合, 适于
发音
别名
释义与例句
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1.
Used other than figuratively or idiomatically: see up, to.
She went up to the third floor.
Go up to the counter and ask.
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2.
Capable, ready or equipped, having sufficient material preconditions for, possibly willpower (at a particular moment).
to feel up to it
Are you up to lifting something that heavy?
Are you up to the challenge?
Are you up to going to the beach?
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3.
As much as; no more than (also with of).
You can make up to five copies.
Violators may face a fine of up to $300.
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4.
Until.
Up to that point, I liked her.
I've read up to chapter 5.
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5.
Doing, involved in.
Devising, scheming (planning something mischievous or inappropriate).
He looked like a man up to no good.
What are you kids up to with all that toilet paper?
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6.
Considering all members of an equivalence class the same.
数学There’s only one rooted tree with two leaves, up to ordering.
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7.
Familiar with the meaning of; able to understand.
古体 俚语 -
8.
Taught by; in the class of.
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9.
Within the responsibility of, to be attributed to the sphere of influence of, having someone or something as authoritative in.
It’s up to you whether to get the blue one or the red one.
It's up to the prosecution to prove that the defendant is guilty.
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10.
Doing, involved in.
to be up to
to get up to
What are you up to today?
词源
From Middle English up to, from Old English up tō.
来源：wiktionary