Tonnes of water cas cading down this pipe that is, effectively,plummeting to the depths of the ice sheet through over a kilometre of vertical ice.無(wú)數(shù)噸的水從這里傾瀉而下相當(dāng)于是從一千米高的冰川上驟然跌落至冰原最深處

effective:有效的, 生效的, 實(shí)際的

effective, efficient這兩個(gè)形容詞很容易混淆。

effective表示有效用的。

His teaching was not very effective.

他的教學(xué)效果不好。

The new interest rate becomes effective next month.

新利息下月生效。

efficient表示“效率高的”，可指人。

He needs an efficient secretary.

他需要一個(gè)高效率的秘書。

The staff was very efficient.

工作人員效率很高。

Alun Hubbard is a glaciologist,studying the enormous power of these waterfalls, which are known as moulins.這些瀑布叫做冰川鍋穴冰河學(xué)家艾倫·哈伯德研究的便是它們的巨大能量

known as:被稱為, 公認(rèn)為

It's known as the most dangerous part of the city.

那地方都知道是市內(nèi)最危險(xiǎn)的地段。

He is little known as an artist.

他是個(gè)不出名的藝術(shù)家。