比较级： more rarely
最高级： most rarely

There are rarely large incumbent firms .

目前很少有大型出租车公司。

Rarely has one telegram had such impact .

难得有电报会产生如此深远的影响。

Until recently , the flag was rarely flaunted .

而直到最近之前，国旗也是鲜见飘扬。

Rarely elegant , often brutal , sacking the boss is a traumatic way to change direction .

偶尔温和，时常残酷，把老板炒掉往往是一个公司为了改变方向而不得不采取的创伤性疗法。

Rarely does the gulag intrude .

集中营很少受到侵扰。