When the water level was high, the user needed only to descend a few steps to reach it; when it was low, several levels would have to be negotiated.

当水位高的时候，使用者只需要往下走几个台阶就能到达井的部位；当水位低的时候，就要走好几层了。

youdao

youdao

During high tide sea level is just under the level of the deck giving the impression of walking on water.

在涨潮时海平面恰巧在平台之下，给人以行走在水面上的印象。

youdao

"Whether it is a high water level or low, the Merced River flows year round and the current can pull anybody in, " said Gediman.

CNN: STORY HIGHLIGHTS

Their output will be presented as a contribution on water for the UN High Level Panel on the Post 2015.

UNESCO: World Water Day on Water Cooperation

Tuesday as a result of circulating-water pumps being affected by high river level and debris in the waterway.

FORBES: Storm Shuts 3 Nuke Plants; 'Alert' Remains At Oyster Creek