Set your dryer on low or medium heat, and keep the dryer about six to eight inches away from your hair.
把你的吹风机调到低档或中档热度,离头发大约六到八英寸远。
Melt the butter over a medium-low heat. When it is melted and bubbly, put in the flour.
用中低火把黄油加热。待黄油熔化起泡后,放入面粉。
You've probably seen agar plates, if you smear a solution that's contaminated with bacteria on it, then that bacteria will grow on this agar rich medium and you'll get many, many copies of the bacteria that you've smeared at low density onto the plate.
你们大概见过琼脂培养基,如果将有细菌的溶液涂抹在培养基上,细菌就会在富含琼脂的培养基上生长,你会得到许多许多细菌,即使你只涂抹了低浓度溶液
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