1520s, "pertaining to the celestial tropics," from tropic + -al (1). In reference to the torrid zones of the earth, from 1690s. Meaning "hot and lush like the climate of the tropics" is first attested 1834.
双语例句
1. The company is the world's largest destroyer of tropical forests.
该公司对热带雨林的破坏位居世界之首。
来自柯林斯例句
2. Tropical colours may look rather harsh in our dull northern light.
热带色彩在我们北方暗淡的光线下可能显得有点刺目。
来自柯林斯例句
3. Tropical storm Marco is pushing northward up Florida's coast.
热带风暴“马可”正沿佛罗里达海岸向北推进。
来自柯林斯例句
4. A tropical storm is gaining strength in the eastern Atlantic.