...y to try to check what was missing by the next day.这句话里,为什么用 what was missing? 而不用 what were missing ? 呢。一般小偷偷东西,都不止偷一件吧?这个问题感觉有点Low, 不过自己有点绕在里面了,请老师指点,谢谢!
This revealed that the soil-water content at−15 bars was consistently between four and eight molecular layers of water coverage for most soils. This equals the water coverage below which volatile organic chemical vapor/solid partitioning becomes significant.这个句子中below which 做什么成...