只要局部温度达到燃点,五百度左右,分不同燃料,就可以产生火焰。 如果散热没有放热大,火焰就不会灭。 如果放热大于散热,火焰就会更旺,更大。 空气的导热系数不大,所以仅是空气对流,散热不大。 如果有风,空气强对流换热,可能火就灭了。 所以在北极生火,只要材料发热量好,背风就可以的。
When I was young, my grandma and I often made a fire to cook the meal.
I only /just want to dream.
I only /just want to dream.
At the ends of January,at the beginning of February
白羊座 Aries 金牛座 Taurus 双子座 Gemini 巨蟹座 Cancer 狮子座 Leo 处女座 virgo 天枰座 Libra 天蝎座 Scorpio 射手座 Sagittarius 摩羯座 Capricornus 水瓶座 Aquarius 双鱼座 Pisces She is Sagittarius
What's / What is your horoscope?/ Which horoscope/star sign are you? [你是什么星座? / 你是哪个星座?] 1. I'm (a) Capricorn [我是摩羯座] 2. My horoscope is Capricorn. [我的星座是摩羯座] Horoscope可以用 Star Sign(星座)来代替。 属相; What's/ What is your zodiac? [你的属相是什么?] 1.I'm a (属相,比如说:Dog/狗)[我是狗] 2.My zodiac is dog [我的属相是狗] 3.My animal is dog [我的动物是狗] 4.I was born on the year of the dog [我是在狗年出生的]
what is your constellation?
十二生肖琴棋书画 The twelve zodiac fancies of men of letters 重点词汇 * 十二生肖Chinese Zodiac
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