出现此类致死情况是极为罕见的。
这是极为罕见的抗生素需要。
这是一个极为罕见的现象-让他为你工作！
是难于诊断的内脏恶性肿瘤极为罕见的体征。
It is only very rarely a sign of an undiagnosed internal malignancy, however.
第二种做法在历史上是极为罕见的，但也不是不可能。
The latter is extremely rare historically, though not impossible.
偶尔论坛参照系统，在一个极为罕见的事例，一个图片。
The occasional forum reference to the system, and in one exceedingly rare instance, a picture.
这样的疯狂枪杀在英国极为罕见。
这两种疾病极为罕见，但有引起剧烈暴发的潜力，且病死率很高。
Both diseases are rare, but have a capacity to cause dramatic outbreaks with high fatality.
虽然恶意的科学欺诈极为罕见，但是略微道德出轨的行为却更为常见。
Outright scientific fraud is rare, but less deviant behavior may be much more common.
这就是为何韩国对其货船的营救行为极为罕见，并将引起巨大争议。
That is why the recent South Korean rescue was exceptional and controversial.
这就是为何韩国对其货船的营救行为极为罕见，并将引起巨大争议。
That is why the recent South Korean rescue was exceptional and controversial.
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