1
a seine (for doing sth)
作名词，指曳网；常用单数，后接 for + 动词-ing 表示用途。
They bought a seine for catching shrimp.
他们买了一张捕虾用的曳网。
塞纳河
先理解核心含义，再看它在真实句子里的用法。
塞纳河
a French river that flows through the heart of Paris and then northward into the English Channel
They bought a seine for catching shrimp.
他们买了一张捕虾用的曳网。
A long net having floats attached at the top and sinkers (weights) at the bottom, used in shallow water for catching fish.
一条法国河流,流经巴黎市中心,然后向北注入英吉利海峡
a French river that flows through the heart of Paris and then northward into the English Channel
一种大型渔网,垂直悬挂,顶部有浮子,底部有重物
a large fishnet that hangs vertically, with floats at the top and weights at the bottom
They used a long seine to sweep the shallow bay for shrimp.
他们用一张长曳网在浅海湾捕捞小虾。
The old man leaned his seine against the shed to dry in the sun.
老人把曳网靠在棚屋边，让它在阳光下晾干。
He bought two seines from the market, one for freshwater and one for the sea.
他在市场上买了两张曳网，一张用于淡水，一张用于海水。
作名词，指曳网；常用单数，后接 for + 动词-ing 表示用途。
They bought a seine for catching shrimp.
他们买了一张捕虾用的曳网。
作及物动词，宾语为水域或鱼；for 后接捕捞目标。
They seined the pond for trout.
他们用曳网在池塘里捕鳟鱼。
作不及物动词，后接介词 for 表示目标鱼种。
The crew was seining for herring in the bay.
船员们正在海湾用曳网捕鲱鱼。
Not this
They caught fish with seine.
Use this
They caught fish with a seine.
seine 表示“曳网”时是可数名词，单数形式前需要加冠词 a；中文没有冠词概念，中国学生容易漏掉。
Not this
The seine flows through Paris.
Use this
The Seine flows through Paris.
表示“塞纳河”的 Seine 是专有名词，首字母必须大写；小写 seine 意为“曳网/用曳网捕鱼”，二者同音异形，不能混用。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
围网
The fishing boat uses a purse seine to catch sardines.
渔船用围网捕沙丁鱼。
海滩曳网
A beach seine is used from the shore to catch fish in shallow water.
海滩曳网用于在浅水区从岸边捕鱼。
曳网
The seine net was too heavy to pull by hand.
这张曳网太重，无法用手拉。
布设曳网
The crew set a seine just before dawn.
船员们在黎明前布下了曳网。
收曳网
It took all morning to haul in a seine.
花了整整一上午才把一张曳网拖上来。
曳网捕鱼
Seine fishing is regulated in many countries.
许多国家对曳网捕鱼实行管制。
Use seine naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记忆联想：Seine（塞纳河）和 seine（拖网）只差首字母大小写，想象在塞纳河上撒大网捕鱼。
语域：neutral 常见场景：fishing、commercial fishing、marine industry 该词通常指一种大型渔网（围网或拖地大网），也指用这种网捕鱼；多用于商业捕鱼、渔业或海洋作业等专业语境，日常口语中较少用。
与 /ˈseɪni/ 同韵的词：zany、brainy、grainy（都以 /-eɪni/ 结尾）。注意拼写相似的 vein、reign、sine 是单音节词，分别读 /veɪn/、/reɪn/、/saɪn/，与“seine”在本词条中的双音节读音 /ˈseɪni/ 并不押韵；专有名词“塞纳河（Seine）”常读 /seɪn/，也需区分。
Dictionary facts from ECDICT, WIKTIONARY.