Clean the shave after each use to keep the cutting edge sharp.

每次使用完后要清理电动剃须刀以保持刃口锋利。

youdao

Test results show that average-adaptive smoothing operator can evidently improve location accuracy. The reason is that the combined smoothing operator can eliminate noise and make edge sharp.

采用平均一自适应联合的平滑算法，显著改善了边缘定位精度，其实质在于消噪和锐化边缘。

youdao

Flip them and brown the other side (if they stick, loosen them with the edge of a sharp metal spatula).

NPR: Recipes: 'The Herbal Kitchen'

What gives a particularly sharp edge to the debate in this country is the claim that it is relative poverty, not absolute poverty, which has led to this deterioration.

ECONOMIST: Health

Ascending a free hanging rope that twists in the breeze and juts over an edge (how sharp is that rock?) is one of the scariest things a climber can do.

WSJ: Training for the Big Wall | By Michael J. Ybarra