few and far between
稀少,罕见rare; not happening often
People who work as hard as you are few and far between!像你这样努力工作的人真是太少了!

no fewer than
至少,约有as much as
No fewer than 10 students were absent through illness.因病而缺课的学生不下10名。
It was an enormous ship, there were no fewer than a thousand cars on it.这是一艘硕大无比的船,上面至少载有上千辆汽车。

用作定语
▲～+n.
 He is a man of few words.他是个沉默寡言的人。
Few students attended the meeting.没几个学生出席会议。
I have too few chances to enjoy myself.我享受生活乐趣的机会太少了。
用作表语
▲S+be+～
 Changes in policy were few.政策很少变化。

no fewer than, not fewer than
这两个词的意思表示的主观意愿不同:no fewer than表示“几乎一样多”; not fewer than则表示“最少一样多或更多”。试比较:
There were no fewer than 1000 people at the meeting.
到会人数竟达一千人之多。
There were not fewer than 1000 people at the meeting.
到会人数至少也有一千人。

1.few用作代词时,意思是“很少,几个”,作主语时谓语动词须用复数形式。
2.only few, so few相当于few,表示否定; some few相当于some,表示肯定。

Few know and few care.很少有人知道,也很少有人关心。
Few of them came to class during last storm.上次暴风雨期间他们很少有人来上课。
I have very few left.我所剩无几。
Very few of the students are from Beijing.极少数的学生是北京人。
They'll probably have a few in by this time.到这个时候他们多半会喝上几杯。
Only〔So〕 few of them care to sing a song.他们没几个人愿意去唱支歌。
Some few of the students are absent today.有些同学今天缺席。
Quite a few of us are getting worried.我们当中有不少人在担心。
The bad news will disturb me not a few.这坏消息将使我深感不安。

few, a few
few的意思是“很少的…,几乎没有的…”,表示“虽然有,但很少”,强调“少”,表示否定的意思; ａ ｆｅｗ的意思是“少数的…,几个…,一些…”,表示“虽然少,但还有”,强调“有”,表示肯定之意,两者之间的差别主要是主观上的,而不是实际数字上的差别。例如:
There are few people in the room.
房间里没有几个人。(虽有但少)
There are a few people in the room.
房间有几个人。(虽少但有)
few, little
这两个词都有“很少”“没多少”的意思,都表示否定含意。few用于可数名词前,与many相对; little用在不可数名词前,与much相对。

［同义词］ adj. hardly any, limited, not many, unusual pron. some
［反义词］ adj. many, numerous, plentiful
［词源］＜中古英语fewe＜古英语feawa(少,少的)