They say thirty million tropical fish are disappearing every year because of a growing interest in tropical fish.

VOA: special.2010.08.10

I'm going to go somewhere tropical for a week or two.

我要到热带地区待上一两个礼拜。

享受冲浪 - SpeakingMax英语口语达人

The Chazy Reef on the island contains coral, like a reef in a warm, tropical ocean.

VOA: special.2009.01.05

Francois Chappuis is a specialist in neglected tropical diseases with the international group Doctors Without Borders.

VOA: special.2010.04.07

Recently,some experts have suggested that he might have become infected with a tropical disease.

VOA: special.2009.02.25

The next day,it grew strong enough for scientists to call it a tropical storm.

VOA: special.2010.08.24

Buruli ulcer is a disease found in tropical climates.

VOA: special.2009.04.06

Sleeping sickness is one of a group of diseases known as "neglected tropical diseases."

VOA: standard.2010.04.05

For many years, adventure writer Peter Heller had nurtured a secret dream: to drop everything and go off to a tropical paradise and learn how to surf.

VOA: standard.2010.08.04

Statistics from Australia's National Tidal Center show sea levels have increased by 8.6 millimeters a year off Perth and by 8.1 off the tropical Kimberley region over the past two decades.

VOA: standard.2009.11.09