Article in English: Clean and dry the basil:  First, remove all leaves from the stems. If you're going to try out the second freezing method, then you will probably want to leave some of the buds intact. The stems should be discarded. Rinse the leaves thoroughly, taking care not to bruise them. Finally, remove excess water from the leaves by using a salad spinner or laying them out on towels to dry. Place 1 or 2 handfuls of the basil in your food processor, then chop or purée the basil leaves with extra virgin olive oil and a bit of salt. Coating the basil pieces with oil protects them from air so they can maintain their color and flavor. Pour the purée into small air-tight containers and add some extra olive oil on top. After defrosting the purée, re-process adding your favorite pesto ingredients. This method takes a little more time, but is still an easy way to freeze basil. This method keeps whole individual leaves or plant buds intact to use as garnish.  Put prepared leaves and buds on trays in the freezer for about one to two hours. Once they are frozen, put them into airtight containers. Do not overcrowd them because they will lose their shape. After defrosting for use, you can julienne the leaves or use them whole as garnish on pasta dishes or soups. This method is the easiest of all the freezing methods.  Simply pack the leaves into a cleaned out milk carton with the top cut down. Seal the top closed. Use quart (950ml) sized cartons and then put the sealed carton inside a Ziploc baggy to make it air-tight. When you want to use the basil for cooking, cut off a slice of the carton and re-store the remainder as it was. The frozen leaves are great to use in sauces.

Summary in Chinese:
准备要冷冻保存的罗勒叶，洗干净并晾干水。 以制作香蒜沙司酱的方式冷冻保存罗勒叶。 以冷冻方式保存罗勒叶的方法如上所述，这种方法可能要多花点时间，但仍然不失为一种简单的方法。 用牛奶盒冷冻罗勒叶，这种方法是所有冷冻保存方法中最简单的。