BBC News Review: Last male northern white rhino dies

source: BBC Learning English      2018年3月20日
The world's last male northern white rhino has died in Kenya, bringing the subspecies to the very brink of extinction. The 45-year-old rhino was in poor health and was put down on Monday. His daughter and granddaughter are the only females remaining.

Key words and phrases: 
put down: kill an old, ill or dangerous animal
faces: has to deal with a bad situation
in doubt: unlikely to continue or succeed
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