tusk
[tʌsk]
n.
（象等动物的）长牙;
獠牙;
尖形物;
尖头;
vt.
用牙抵（或刺），用牙掘（或撕）;
adj.
有獠牙的，有长牙的;
例句:
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Elephants wear the tusk down faster than they can grow it.
象牙磨损的速度快于生长的速度。
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A huge tusk decorated the wall of his study.
他书房的墙上装饰着一支巨大的象牙.
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The narwhal's single, spiral tusk has always been a mystery.
独角鲸那独一无二的螺旋状尖角总是被视为神秘之物.
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Or would the tusk have been traded from farther north?
来自BBC
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Mr Tusk advocates deeper EU integration and eventual euro membership for Poland.
来自BBC
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Polish President Lech Kaczynski and Prime Minister Donald Tusk both issued statements mourning Edelman.
来自CNN