- 1淤泥、粉砂（水裡帶著、一慢下來就沉的細土）
Silt is the fine mud and tiny sand that water carries along, then drops when the water slows down — at a bend in a river, at the mouth of a harbour, behind a dam. It feels smoother than coarse sand and grittier than sticky clay. After a flood you see a pale skin of it on fields and roads. use it as a size-word; boatmen and harbour workers use it as a nuisance-word, because silt fills channels and makes the water shallow. The noun is the common form. The verb is almost always silt up: a river or a port silts up when this stuff settles and blocks it. It is a quiet, practical word, not slang and not fancy. Though actually, people say “mud” or “sand” for the same sight. Mud is wetter and vaguer; sand is coarser. Silt sits in the middle, and that is why the tidy school sentence is a little tidier than the riverbank, where it all mixes.
組成From Middle English silte, cilte, cylte. Scholars are not sure of the next step: it may be from an old verb sile, “to filter or strain,” plus -t, or it may be a cousin of Norwegian and Danish sylt, “salt marsh,” Middle Low German sulte, and German Sülze, going back to a Germanic word for salty water, related to Old English sealt, “salt.”
原始詞典資料6 筆記錄
以下是外部詞典記錄的用法，摘錄並精簡格式，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
siltnoun/sɪlt/
- 1
Mud or fine earth deposited from running or standing water.
- A large tube is then followed over several silt banks to surface after a total dive of 200 m in a large passage containing an active streamway – The San Agustin Way. 5 m before the passage surfaces another line junction is passed, ...
- 2
Any material with similar physical characteristics, regardless of its origins or transport.
- 3
geographygeologynatural-sciencesA particle from 3.9 to 62.5 microns in diameter, following the Wentworth scale.
- Above the lower headcut, phreatophytic mesquite and little leaf sumac hug the banks, drawing pendulate water from the silts remaining from former marsh deposits and sending long taproots into channel stores.
- The gravels, initially deposited by surf-zone processes during the Pleistocene low stands in this area were drowned by quartzose sands, and then the prodeltaic silts and clays deposited by the seaward prograding-feather edge of the Holocene Orange Delta were subsequently integrated into the delta-front by bioturbation.
siltverb/sɪlt/
- 1
To clog or fill with silt.
- 2
To become clogged with silt.
- Subject to flooding by the six small rivers coming together just west of the city, the main river below the city has long been shallow and subject to silting. The Communists have both maintained the earlier pattern of dredging the river, and have built a bypass flood canal around the city on the south side to relieve flood pressures. Though dredging can keep the river navigable for small ships, a new artificial port, Sinkang, able to take 10,000 ton ships at all times, was created at T'ang-ku. This is kept open for about two months during winter by icebreakers.
- They are city-dwellers, men whose lives pass in the shadows of buildings, whose lungs are silted with coalsmoke, and few will ever cross the sea.
- 3
To flow through crevices; to percolate.
摘錄自 英文維基詞典 English Wiktionary，已精簡格式；依 CC BY-SA 4.0 授權使用，改動後的內容同樣以此授權提供。