"a school of small glittering fish swam by"
"The silt shallowed the canal"
"the lake shallowed over time"
Running aground is the result of..a mistake in assessing the depth of water over a shoal.
The real shoals ahead lie in policy and in SDP/Liberal relations.
出自：London Review of Books
They would flee to Great Britain in shoals, from the fearful atrocities of their government.
出自： R. Macaulay