- 1帶殼海鮮（蟹、龍蝦、蝦、牡蠣、蛤蜊都算）。若只說「貝類」，會漏掉螃蟹、龍蝦這類甲殼類。
Shellfish are water animals with a hard shell that people eat. Crabs, lobsters, , oysters, clams, and scallops all sit in this group. Shops and restaurants treat it as an everyday food word, not a science word. Though actually they are not fish at all: fish have backbones, and these animals do not. Cooks still lump them together because they come from the sea and you often have to crack or open a shell to eat them. 'Seafood' is the bigger basket — it takes in ordinary fish as well. People also talk about a shellfish allergy: some bodies react badly to this kind of food, sometimes quite strongly.
From the word’s history
From Old English scielfisc; shell + fish.
來自古英文 sċielfisċ：shell（殼）加 fish（魚）。
組成shell + fish. Inherited from Middle English schellefyssch, from Old English sċielfisċ. The second piece is 'fish,' though the animals are not fish in the scientific sense.
原始詞典資料2 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。
shellfishnoun/ˈʃɛl.fɪʃ/
- 1
A fisheries and colloquial term for an aquatic invertebrate having an inner or outer shell, such as a mollusc or crustacean, especially when edible.
- 2
A culinary and nutritional term for several groups of non-piscine, non-tetrapod, aquatic animals that are used as a food source. The term often exclusively refers to edible aquatic crustaceans, bivalve mollusks and cephalopod mollusks; but sometimes echinoderms may be included as well.
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。