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1.extinct adj. 灭绝的，绝种的；熄灭的 vt. 使熄灭
At the current rate of decline, many of the rain forest animals could become extinct in less than 10 years.
按照目前的下降速度，许多雨林动物不到十年就会绝种。
2.coral reef 珊瑚礁
An unspoiled coral reef encloses the bay.
未经破坏的珊瑚礁围绕着该海湾。
3.shoreline n. 海岸线；海岸线地带
For eons,the pounding waves ate away at the shoreline.
长时期以来波涛汹涌的海浪冲蚀着海岸线。
4.endanger vt. 危及；使遭到危险
The debate could endanger the proposed Mideast peace talks.
这场争论可能会危害中东和谈的倡议。
