adj.有酸味的;敌对的;坏脾气的;别扭的;
vi.变酸,变馊;发酵;厌烦;败坏;
vt.变坏,恶化;使变酸;使失望;使不毛;
例句:
How sour these grapes taste!
这些葡萄真酸!
Between sour and elderly people friendship arises less readily.
在性格乖戾之人或老年人之间很难产生友谊.
She really looks sour this morning.
她今天上午脾气的确有些坏.