Not by nature courageous, he had steeled himself to conspicuous acts of rare courage . 他生性并不勇敢，但是他硬逼着自己作出了卓越而罕见的英勇行为。
Manoeuvres of a most extraordinary kind were going on in the vast firmamental hollows overhead . 头顶的茫茫太空中正在进行着一场规模极为罕见的调兵遣将。
She asked this question, still without looking at me, but in an unwonted tone of sympathy . 她问这话时，依旧没有看我一眼，可是那语调却充满了罕见的同情。
More rarely such larvae, which fail to reenter the circulation, are found in other abdominal organs . 更罕见的是，蛔蚴不能再进入循环而进入腹部其它器官。
Few fellows had talents like his and fewer still could remain unspoiled by such success . 象他那样有才能的人是罕见的，而功成名就之后依然保持本色的人更少见。
Occasionally , unusual creatures are washed to the shore , but they are rarely caught out at sea . 偶尔，一些罕见的动物被冲到岸上来，但是它们在海上却很少能被捕捉到。
We might only learn that our estimates are inaccurate and that civilization is extremely rare in the universe . 所能说明的仅仅是：我们的估计是不精确的，在宇宙中，文明世界是极其罕见的。
It is a rare occasion when the moon does pass more or less directly before or behind the earth, an eclipse occurs . 在月球几乎直接从地球正面或背面穿过这种甚为罕见的情况下，就会发生食。
Madame merle had had that note of rarity, but what quite other power it immediately gained when sounded by a man . 梅尔夫人虽然也有罕见的特色，但这个特色体现在男人身上的时候，就具有了完全不同的力量。
The last days of hankou still remain in my mind as rare, unusual days from the psychological and human viewpoint . 在汉口最后度过的那些日子，至今仍萦绕在我的心头，从心理学和人性的观点看来那是些罕见的不寻常的日子。
