It is well known to enthusiasts that a glass must be "beer clean" -free of any grease or skin oils, including fingerprints-to support a good head of foam.

很多热衷者都知道，要想倒出一杯漂亮的泡沫满满的啤酒，他的杯子必须做到“啤酒干净”——也就是说不能有一点儿油渍或者皮肤的油，连指纹都不能有。

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Cooking from scratch enables us to do two things that the Colonel can't: use great chicken and drain the grease more efficiently. This gave us a real head start, and the results were stunning.

烹饪从头学起，使我们可以做两件上校不能做的，使用好的鸡，还有放更多的油。

youdao

The duo (also known as Evil Mad Scientists) created a charming little droid called a BristleBot which can be easily constructed using the head of a toothbrush, a pager motor, and a tiny amount of elbow grease.

ENGADGET: Evil Mad Scientist's "BristleBot" project boosted by Scholastic / Klutz for book, no credit in sight