自2010年至今的四级考试中， 共出现过 次
自2010年至今的六级考试中， 共出现过 次
ADJ-GRADED 酸的;酸味的 Something that is sour has a sharp, unpleasant taste like the taste of a lemon.
The stewed apple was sour even with honey.
ADJ (牛奶)变质的，馊的 Sour milk is milk that has an unpleasant taste because it is no longer fresh.
ADJ-GRADED (人)乖戾的，尖酸刻薄的，不友好的 Someone who is sour is bad-tempered and unfriendly.
She made a sour face in his direction...
Police, weary and increasingly sour in mood, wonder aloud why the situation has been allowed to deteriorate.
ADJ (状况、关系等)变坏，变糟，不再令人满意 If a situation or relationship turns sour or goes sour, it stops being enjoyable or satisfactory.
Everything turned sour for me there...
Even the European dream is beginning to turn sour...
V-ERG (使)(友谊、局势、态度等)变坏;(使)恶化 If a friendship, situation, or attitude sours or if something sours it, it becomes less friendly, enjoyable, or hopeful.
If anything sours the relationship, it is likely to be real differences in their world-views...
Her mood soured a little.
PHRASE 酸葡萄(喻指由于得不到而加以贬低的东西) If you refer to someone's attitude as sour grapes, you mean that they say that something is worthless or undesirable because they want it themselves but cannot have it.
Page's response to the suggestion that this might be sour grapes because his company lost the bid is: 'Life's too short for that.'