Below us dark, gullied ridges held another half million years of sediments. Beyond them was the basalt, laid down when this vast plain was swamped in lava, 5.2 million years ago.

就在我们远眺处的下方，黝黑的沟状脊代表了另外一种50万年的沉积层，更远处铺满了玄武岩，520万年前，这块巨大的平原被淹没在火山岩浆之中。

youdao

She momentarily laid the painting in her lap and I could see it was nothing but a plain white blank.

她立刻将油画放在她大腿上，我看到的只是白色的空白。

youdao

Wove paper: paper produced Using a plain, woven dandy roll and there fore without laid lines, as distinct from laid paper.

布纹纸：造纸时，水印辘用平坦的织物包面，纸面于是无压线纹理，有别于纹纸。

youdao

When the recession came, however, businesses cut production, laid off staff, and in some cases plain went out of business.

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