mean a. 吝啬的；卑鄙的；邪恶的；丑陋的；平均的
by all means   1. (=at all costs) 不惜一切 2. (=certainly)  当然行;
If  you  feel  you  need  to  ask  any  questions, by  all means do so.
He was determined to become leader by all means.
 
by means of  用…;
They succeeded by means of patience and sacrifice.
他们靠耐心和牺牲而取得了成功
 
by no means  完全不,  决不
This remark by no means should be taken lightly.
这次讲话绝不能等闲视之

generous、hard、harsh、mean、stingy、generosity、generously、liberal、openhanded、unselfish；

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