Your Alpha chanel should fill with white in the shape of your roughly cutout image.

你的阿尔法通道应该在粗略剪切出的图形里填充白色。

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Good power density means a shape like a peanut butter jar, easy to fill or empty; low power density is more like a wine jug with a narrow neck.

电能密度好的就像花生酱罐子口，很容易装满或倒空；电能密度差的就像窄瓶口的酒壶。

youdao

Draw a circle shape. Set layer Fill to 0%, add layer styles.

画一个圆圈的形状。设置层填补到0%，加层风格。

youdao

He said the fact that the town is the county town which is where the county and borough councils are based, as well as the scheme whereby retailers make contributions towards cleaning, security and marketing means Taunton is in good shape to attract other retailers to fill the derelict shops.

BBC: Taunton

He has created some big shoes to fill, and now that the 2013 mayoral race is starting to shape up, it will be interesting to see who steps up to fill them and what their brands will bring to New York City.

FORBES: Mayor of New York, a Helluva Brand

Groups of those meshes are formed into a 3D shape, then seeded with cell cultures, which grow to fill in the lattice to create the final system.

ENGADGET: Harvard scientists grow human cells onto nanowire scaffold to form 'cyborg' skin