The water shoals at this turn.

水在这个转弯处变浅了。

The ship hit the shoal and ran aground.

那艘船撞上了浅滩，搁浅了。

He anchored in the shoal river.

他在河流浅滩的地方抛锚。

The ship struck a shoal and brought up all standing.

那艘船撞上了浅滩突然停住

The shark described a circle around the shoal of fish.

这条鲨鱼围绕着鱼群游动。

Merely observing a shoal does not make it clear which individuals lead and which follow.

仅仅只观察一个鱼群并不能清楚地区分哪些鱼群是领导，那些是随从。

Recent research had shown that fish recognised individual "shoal mates", social prestige and even tracked relationships.

最近的研究表明鱼可以识别各自的“鱼群伙伴”、社会威望，甚至相关的人际关系。

Agrillo's team found that mosquitofish can discriminate between numbers up to 16, but only if the ratio between the fish in each shoal was greater than 2:1.

阿格利罗的团队发现，食蚊鱼最多可以分辨大到16的两个数字的大小，但前提是每个鱼群中鱼的比例大于2:1。

A few minutes later, Tom was in the shoal water of the bar, wading toward the Illinois shore.

过了几分钟，汤姆来到沙洲的浅水区，涉水朝伊利诺斯州的海岸走去。