The practices showed that the complex roof of C4 seam was effectively controlled. Therefore the roof control problem of the coal mining face under the complex roof conditions was solved.

实践应用表明，C4煤层复合顶板得到了有效的控制，解决了复合顶板条件下回采工作面的顶板控制问题。

youdao

Although many of the churches appear from the outside to be complex structures, they normally feature only a single story but numerous different roof levels.

虽然许多教堂从外面看起来结构很复杂，然而它们通常只有一层楼，但有许多不同层级的屋顶。

youdao

Although many of the churches appear from the outside to be complex structures, they normally feature only a single storey but numerous different roof levels.

虽然许多教堂从外面看起来是复杂的结构，但它们通常只有一层，只是有许多不同的屋顶。

youdao

The fire swept through the 330ft-long complex after the blaze was reported in its roof early on Friday morning at Seaborough Manor near Beaminster.

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Designed by Farshid Moussavi, another talented female architect from London, MOCA Cleveland suggests the simplicity of a cube but is actually more complex, with chamfered edges chiseling a square roof out of a hexagonal base.

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Buildings on either side of the complex remained intact: a temple behind it was completely unharmed, and fragile paper lanterns hanging from its roof were dusty but undamaged.

CNN: ASIANOW - TIME Asia | Taiwan: The Day the Earth Moved--Page 3