Xie Bihong is bright and smiley as she chats to Zhao, but there's a nerviness to her, too.

正在与赵昆明交谈的谢毕红（音译）带着明快的微笑，但是她也有点紧张。

However, while these developments are adding to investors' nerviness on the short-term direction for commodity markets, they are rather bullish for the long term.

然而，尽管这些情况加剧了投资者对大宗商品市场短期走向的担忧，但对于长期走势，投资者仍较为乐观。