Its operations has been limited and the boat has never sailed beyond China's regional waters.

它的操作已经被限制，而且潜艇从未航行超过中国地域的水域。

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Surface waters in particular are renewable resources with a limited capacity to recover from adverse impacts from human activities.

地表水是可再生资源，但是人类活动产生的负面效应严重的限制了水质恢复能力。

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Phosphorus is a non-renewable and limited resource, and is also the key element that causes eutrophication of waters.

磷既是一种不可再生的资源，也是造成水体富营养化的重要因素。

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Pure electric cars and plug-in hybrids are just now testing the waters in limited numbers and are yet to be ready for prime time.

FORBES: California Orders Automakers To Sell More Plug-In and Fuel-Cell Cars

Since the flotilla raid, Israel has allowed a greater amount of goods to enter Gaza, but it still maintains a complete blockade of the airspace and territorial waters and has limited most exports.

CNN: Egypt reopens border with Gaza

Nevertheless, the main ambition is that AQUA-LAC establishes an international framework within its field, through its unquestionable scientific quality and relevance, which is also not only limited to scientists and professionals of the Latin America and the Caribbean's waters.

UNESCO: IN FOCUS