up to
直到,達到…;由…決定;從事,搞
up to
adj 1: busy or occupied with; "what have you been up to?"; "up to
no good"
2: having the requisite qualities for; "equal to the task";
"the work isn't up to the standard I require" [syn: adequate
to(p), capable, equal to(p), up to(p)]