keep to oneself(=keep secret)不告诉别人
to(the best of)ones knowledge据 所知
at large(=at liberty，free)在逃，逍遥法外at large(=in general)一般来说，大体上;
at large(=at full length;with details)详细地
lean against(背)靠着
at least至少;at most至多
(not)in the least一点(也不)，丝毫(也不)
at ones leisure在 有空的时候
lend itself/themselves to适合于(某用途)
at length(=after a long time，at last)终于;at length(=in detail，thoroughly)详细地
go to any length想一切办法，尽一切力量
be liable to(=be subject to)易于...的'，应受(罚)
be liable for对...应负责任的
