Remove the pins, then stitch all around the perimeter, 1.5cm from the edge, as marked in figure A.
将大头针去掉,沿周长在离边缘1.5cm处缝一周,如图A。
Today, commercial aircraft remove ice that accumulates on wings in-flight by redirecting hot air from the jet engines to the leading edge of the wings to keep them warm.
今天,商用飞机主要靠把从喷气式引擎排出的热空气引导到机翼的边缘,使它们变暖,以此来达到除冰的目的。
Remove leaf litter, brush and weeds at the edge of the lawn.
清楚草坪周围的落叶,灌木和杂草。
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