第二盏灯：位置在右下方 (1, -2, -4)，负责照亮物体的背面或暗部。
Microbiologists have been growing microbes on agar plates for nearly 150 years, but agar’s discovery dates back to a happy accident in a mid-17th-century kitchen. Legend has it that on a cold winter day, a Japanese innkeeper cooked tokoroten soup, a Chinese agar seaweed recipe known in Japan for centuries. After the meal, the innkeeper discarded the leftovers outside and noticed the next morning that the sun had turned the defrosting jelly into a porous mass. Intrigued, the innkeeper was said to have boiled the substance again, reconstituting the jelly. Since this discovery, agar has become a staple in many Japanese desserts, from yokan to anmitsu.
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EPA found only 27 of 219 plants needed upgrades; 71 later got exemptions as Donald Trump scrapped mercury limits
4. Calling Web APIs can still be slow