They shut their shells immediately after detecting " dangerous" water.

检测到水源发出的“危险”信号，河蚌立即合上蚌壳。

Based on this, the researchers selected eight clams at a time and recorded the natural opening of their shells.

基于此，研究者们同时选择了八只河蚌进行试验，并且记录其蚌壳的自然开启。

With sensors stuck onto their shells, the clams are connected to a system that records how wide the shells are open.

蚌壳上粘贴的传感器将河蚌与记录蚌壳开启程度的系统连接到起。

I can get enough shell to make it worth while to fish for it, and, who knows? I may find pearls.

我想用这艘船打蚌壳，准能把买船的钱赚回来。谁能说准，我也许真获些珍珠呢。

As we release more carbon dioxide, and the ocean's pH continues to decrease, animals that make shells like clams and oysters will struggle.

随着我们排放出更多的二氧化碳，以及海洋的 pH 值持续下降，如蛤蛎与牡蛎等制作出蚌壳的生物将难以生存。

It is, after all, the dab of grit that seeps into an oyster's shell that makes the pearl, not pearl-making seminars with other oysters.

说到底是颗沙铄落人蚌壳才长成了珍珠，而不是群蚌开结果才长出了珍珠。

If four or more clams close their shells at the same time, an alarm will be triggered and the water supply will be shut down.

如果四只及以上河蚌同时合上蚌壳，就触发警，同时切断水供给。

" Three fingers do not bend, " complained Tagganaro, between mussels. " What good is a cutpurse who cannot use his fingers? Narbo was good at picking pockets, not so good at picking whores" .

" 三根手指无法弯曲，" 塔甘纳罗在吞食蚌壳的间隙抱怨，" 个不能用手指的贼顶啥用？纳博挑选要摸的口袋很在行，挑选婊子可不怎么样。"

" Now, " he answered. " Beyond these walls you will find the hundred isles of Braavos in the sea. You have been taught the words for mussels, cockles, and clams, have you not" ?

" 现在，" 他回答，" 去神庙之外。布拉佛斯是海中的上百岛屿，你已经学怎么说蚌壳、扇贝、蛤蜊，对不对？"