plumbed词根词缀

But the decline, so far, has hardly been a panicked rout. Although the dollar has plumbed historical depths against an index of major currencies, it has fallen by less than 1.5% since the financial turmoil hit in early August.

虽然美元对主要货币指数已经下降到历史低点，但是从8月初的金融震荡起，美元下降还不到1.5%。

After he plumbed the direst depths of Gotham City in his "Dark Knight" trilogy and traversed multiple levels of consciousness in "Inception," it seems the only place the filmmaker Christopher Nolan could go next was outer space.

在《黑暗骑士》（Dark Knight）三部曲中探索过哥谭市最险恶的深渊，又在《盗梦空间》（Inception）中跨越意识的多重层次之后，导演克里斯托弗·诺兰（Christopher Nolan）接下来能去的地方似乎只有外层空间了。

The dollar is zigzagging, falling below the90 yen mark Friday and testing the depths it plumbed against the euro a year ago.

美元正在上蹿下跳，上周五对日圆跌破了90日圆关口，并且正在考验一年前对欧元创出的低点。