Helical-fin section
[机] 螺翅
🧩 词语组成解析
a. 螺旋状的\\n[电] 螺线
fin
[fin]
n. 鱼鳍;鳍状物;（汽车、飞机、炸弹上的）尾翅;散热片;
vt. 给…装上翅片;切除鳍;
vi. 潜泳;（猛烈地）拍动（鳍）;
section
['sɛkʃən]
n. 部分;节;部件;部门;
vi. 切开;切断;做（动物或植物组织）切片;把（精神病患者）正式送入精神病院;
vt. 把…切成片（或段）;作…的切片;把…作成截面;制作…的剖面图;
sect切， 割+ion名词后缀 → 切开；部门
🗣️ 情景例句
The school was attended almost entirely by local children.
上这所学校念书的几乎全是当地的孩子。
He has forgotten about his job.
他把工作忘得一干二净。
A radio message from the mainland had been received by the ship's captain instructing him to give up the search.
返航前，该船船长收到了大陆发来的电报，指示他们放弃这次搜寻。