unidentified

an unidentified benefactor

不愿透露姓名的捐助

a picture of an unidentified motorcyclist.

份不明摩托车手的像。

a unidentified flying object

不明飞行

unidentified flying object (UFO)

来历不明的飞行, 飞碟

The Institute says that an unidentified virus is to blame for the syndrome.

该研究所，引起这种综合症的是种尚未确认的病毒。

The previously unidentified objects have now been definitely ascertained as being satellites.

原来所说的不明飞行现在已证实是卫星。

Hello? Fourth Interceptive Command? I see an unidentified object flying around my little head.

你好？第四拦截司令部？我看到个不明体在我的小脑袋周围飞来飞去。

Several non-infectious diseases including the leaf red spot, gummosis, herbicide in jury, typhoon damage and genetic albinism and an unidentified leaf crinkle disease are also described.

此外非病原性病害包括红斑病、流胶病、除草剂药害、风害及遗传性白化症等，以及病因不明之尾叶桉皱叶病亦在文内叙述之。

The unidentified Saudi holidaymaker proposed marriage to a 17-year-old village girl and offered a dowry of about 28,000 dollars as well as gold jewellery, the source said.

这位分不明的沙乌地度假客向名17岁村落女孩求婚，同时提供价值约28,000美元的嫁妆与黄金珠宝，消息来源指出。