热带

• Pinyin: rè dài
• Hanzi breakdown: 热 = 灬 + 执 (fire radical — intense heat); 带 = 巾 + 廿 + 丨 (cloth/belt — a zone or strip)

Meaning

The tropics; the tropical zone. The geographical region straddling the equator, characterised by consistently high temperatures, abundant rainfall, and lush vegetation.

Used in 热带雨林 (tropical rainforest), 热带气候 (tropical climate), 热带鱼 (tropical fish), 热带疾病 (tropical disease). Primarily a scientific and geographical term, also common in travel writing.

Examples

1. 热带雨林是地球上生物多样性最丰富的生态系统之一，孕育着数以万计的动植物物种。 Tropical rainforests are among the most biodiverse ecosystems on Earth, home to tens of thousands of plant and animal species.
2. 由于长期生活在温带地区，他初次踏上热带土地时，对那种湿热交织的气候颇感不适。 Having lived in a temperate region for so long, he felt quite uncomfortable when he first set foot in the tropics, with that heavy heat and humidity.
3. 研究人员警告，气候变化正在使热带疾病的传播范围向中纬度地区扩展，威胁更广泛的人群。 Researchers warn that climate change is expanding the reach of tropical diseases into mid-latitude regions, threatening broader populations.

Usage Guide

Context: geography, science, ecology, travel

Tone: neutral

Do Say

• 这片热带雨林是全球碳汇的重要组成部分，其保护与否直接影响全球气候变化的走向。(This tropical rainforest is a critical component of the global carbon sink; whether it is preserved or not directly affects the trajectory of global climate change.)
• 热带地区的农业生产受益于充沛的降雨和常年温暖的气候，但也面临病虫害频发和土壤贫瘠等挑战。(Agricultural production in the tropics benefits from abundant rainfall and a perennially warm climate, yet it also faces challenges such as frequent pest outbreaks and poor soil quality.)

Don't Say

• 夏天很热带 — use 夏天很热 or 这里有热带气候; 热带 is a noun/attributive meaning the tropical zone, not an adjective meaning 'hot'

Origin & History

热 (heat) + 带 (belt/zone) — the hot belt of the earth encircling the equator

Cultural Context

Generation: All ages

Social background: Universal