地球最适宜于生命的存在，因为地球有大气层、地表水和适宜的温度。
Earth is right for life because of its gas atmosphere, surface water and moderately warm temperatures.
花色素的合成需要适宜的温度和充足的氧气，低温或缺氧不利于花色素的合成。
Anthocyanidin synthesis needs proper temperature and oxygen, which will fail at low temperature or deficient oxygen.
上个洗手间，穿上舒适的衣服（但也不用太舒适了），将冷气或暖气调到最适宜的温度。
Use the bathroom, put on comfortable clothes (but not too cozy), set the air/heat to best suit you.
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