1. shallow => *shal- => shoal.
2. school => shoal.
中文词源
shoal 浅滩，沙洲
来自古英语 sceald,浅的，词源同 shallow.
shoal 鱼群
来自古英语 scolu,鱼群，词源同 school,鱼群，一群。
英文词源
shoal
shoal: English has two distinct words shoal. ‘Shallow area’ [16] is descended from the Old English adjective sceald ‘shallow’, which in turn came from prehistoric Germanic *skaldaz. (English shallow [15] is related, although it is not clear precisely how.) Shoal of fish [16] is simply a reborrowing of Middle Dutch schōle, which had earlier been taken over as school. => school
shoal (n.1)
"place of shallow water," c. 1300, from Old English schealde (adj.), from sceald "shallow," from Proto-Germanic *skala- (cognates: Swedish skäll "thin;" Low German schol, Frisian skol "not deep"), of uncertain origin. The terminal -d was dropped 16c.
shoal (n.2)
"large number" (especially of fish), 1570s, apparently identical with Old English scolu "band, troop, crowd of fish" (see school (n.2)); but perhaps rather a 16c. adoption of cognate Middle Dutch schole.
shoal (v.)
"assemble in a multitude," c. 1600, from shoal (n.2). Related: Shoaled; shoaling.
双语例句
1. He was transferred to Shoal Creek Mental Institution for an indefinite period.
他被转到了肖尔溪精神病院，要在那里无限期地呆下去。
来自柯林斯例句
2. A shoal of fish will do this.
鱼群也会反射声音的.
来自《用法词典》
3. The boat struck a shoal and fetched up all standing.
那艘船撞上浅滩突然停了下来。
来自辞典例句
4. A shoal of porpoises are well on the feed.
一群海豚正在吞食.
来自辞典例句
5. We need to port the boat to get around the shoal.