Among the findings, the dusky shark which is endangered species that was documented off the coast of Australia, a recently discovered orchid species in Bolivia.
在这些发现中，有澳大利亚海岸记录的濒临灭绝的灰色真鲨，还有最近在玻利维亚发现的兰花物种。
Dusky shark
原声例句
VOA常速英语_美洲
CNN 10 学生英语 2017年8月合集
So as some sandbar and dusky sharks showed up for an all you can eat extravaganza.
因此，当一些沙洲和暗色鲨鱼出现时，你可以吃到饱。
中文百科
灰色真鲨
灰色真鲨（学名：Carcharhinus obscurus）为真鲨科真鲨属的鱼类。分布于美洲东西岸沿海、非洲西岸及东南岸沿海、亚洲东南方沿海及澳洲东西岸沿海、主要在南北纬40度之间以及台东外海等。该物种的模式产地在北美洲。
英语百科
Dusky shark 灰色真鲨
The dusky shark (Carcharhinus obscurus) is a species of requiem shark, in the family Carcharhinidae, occurring in tropical and warm-temperate continental seas worldwide. A generalist apex predator, the dusky shark can be found from the coast to the outer continental shelf and adjacent pelagic waters, and has been recorded from a depth of 400 m (1,300 ft). Populations migrate seasonally towards the poles in the summer and towards the equator in the winter, traveling hundreds to thousands of kilometers. One of the largest members of its genus, the dusky shark reaches 4.2 m (14 ft) in length and 347 kg (765 lb) in weight. It has a slender, streamlined body and can be identified by its short round snout, long sickle-shaped pectoral fins, ridge between the first and second dorsal fins, and faintly marked fins.
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