81.   Tropical forest all about us.

82.   Tropical forests are disappearing.

83.   Tourists came to see the mountain gorillas, hike in the tropical forests, and visit the Mountains of the Moon, an area of extinct and active volcanoes.

84.   Tropical forests absorb large amounts of carbon dioxide, one of the gases that traps solar heat and is thought to increase global warning.

85.   Until now calculations of extinction rates, especially in tropical forests, have often depended on a theoretical construct called the species-area curve.

86.   Poor roads and dense tropical forest made traveling extremely difficult.

87.   Panama also hopes to attract more tourism by turning tropical forests along the canal that are currently occupied by US military bases into ecological reserves, Balladares told reporters.

88.   Rebels use the dense tropical forest as cover for their bases and often venture out to stage attacks.

89.   A scientist says logging in tropical forests may cause wars among chimpanzees.

90.   Aid workers say the ex-FAR soldiers and militia appear now to have split off from the bonafide refugees and headed further west into the tropical forest.

a. + forest >>共 661
dense 6.23%
tropical 5.89%
thick 3.41%
nearby 3.12%
virgin 2.27%
surrounding 2.23%
natural 1.52%
ancient 1.47%
lush 1.31%
dark 1.22%
tropical + n. >>共 428
wave 21.76%
depression 5.67%
forest 4.53%
fruit 3.66%
island 3.24%
moisture 2.59%
plant 2.49%
disease 2.40%
heat 2.20%
air 2.10%
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