Some lorises can survive on little more than tree sap, Knight says.

奈特说，有些懒猴只需树汁就能生存。

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Amber is actually ancient tree sap that has hardened over millions of years.

它其实是古代树木的汁液，经过数百万年硬化而成的。

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"Keep your car out of the sun, " he says. "And keep it away from bird droppings and tree sap.

“保持你的车不晒太阳，”他说，“并保持它远离鸟粪和树汁。

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The tree sap in early spring; the new-born green leaf, soft and fresh as skin;

VOA: special.2010.02.27

The pine tree's sticky sap made her fingers feel stiff and clumsy as she climbed higher and higher.

VOA: special.2010.04.03

Interestingly, tree sap is long gone from the current treat.

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This is the period of time that the cicada nymphs remain underground, feeding on sap from tree roots until their biological alarm-clocks go off.

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Native Americans introduced the sap of the spruce tree to early European settlers in New England.

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