Was it his idea, I wonder, or Rembrandt's, that he should brand himself by wearing his stock in trade?

我在想，穿着自己经营的货物为自己打广告是他本人的主意还是伦勃朗的主意？

That is his stock in trade.

那是他的股票。

Germany was never so powerful, and the Assistant Professor of History had nothing else as his stock in trade.

德国从未如此强大， 历史学助理教授没有别的东西可以作为他的贸易储备。

There were a good many small shops; but the only stock in trade appeared to be heaps of children, who, even at that time of night, were crawling in and out at the doors, or screaming from the inside.

有很多小商店；但唯一的存货似乎是成群结队的孩子，即使在那个晚上，他们也在门口爬进爬出，或者从里面尖叫。