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海龜?shù)耐饷蔡卣? graceful,sleek 海龜?shù)纳眢w結構: flipper,shell, scute,lung, body, skin,head, limb海龜?shù)男袨閯幼? travel, swim,dig, breathe, cover, return,crawl,dine, munch,swallow 海龜?shù)氖澄? plant,animal,alga,sea grass,crab,conch hold one's breath 屏住呼吸 for sure 無疑;肯定 byaccident 偶然地;意外地 in charge of...主管......; 負責·..... dine on... 正餐吃......; 以......作正餐 定語從句: They are one of the few reptiles that live in the sea. 形容詞最高級的表達方式:lt's the world's most endangered seaturtle. 賓語從句: Scientists aren't sure how sea turtles know where to go.條件狀語從句: If the hatchlings follow this light, they will make it tothe sea. 動名詞短語作主語: Swallowing trash can hut and even kill seaturtles.