tentacle
词根词缀：
manacle n. 手铐；束缚
man 手 + acle 物和抽象的概念 → 手上的东西 → 手铐
miracle n. 奇迹
mir 惊奇 + acle 物和抽象的概念 → 让人惊奇的东西 → 奇迹
obstacle n. 障碍（物）
ob 逆 + sta 站 + acle 物和抽象的概念 → 反着站的东西 → 障碍
pinnacle n. 尖塔
pinn 尖 + acle 物和抽象的概念 → 尖的东西 → 尖塔
receptacle n. 容器
re 一再 + cept 拿，抓 + acle 物和抽象的概念 → 装了可以再装 → 容器
spectacle n. 奇观；（用复数）眼镜
spect 看 + acle 物和抽象的概念 → 仿佛看到幻觉 → 奇观
tentacle n. 触角
tent 伸展 + acle 物和抽象的概念 → 伸展出去探 → 触角
数据来源：新东方英语词汇速记大全
相关例句：
The results show that the bearable strength of tentacle is as 0.7 times only as that of its body weight and the jigging-off rate caused by tentacle broken is nearly 100%.
结果表明，鸢乌贼的每根触腕仅能承受的拉力相当于体重的0.7倍，因此，钓捕过程中，因触腕断裂造成的脱钩率接近100%；
The ground-breaking effects used in The Abyss to digitally depict the water tentacle convinced Cameron that his liquid metal villain was now possible.
在《深渊》一片中破天荒使用了数字特效技术制作液态生物触手后，卡梅隆终于有充足的信心来制作续集里的液态金属反派机器人了。
The term may also denote the limb or the locomotive or prehensile organ of an invertebrate ( e.g., the ray of a starfish or the tentacle of an octopus).
arm一词亦指无脊椎动物的附肢或运动器官，如海星的腕、章鱼的触手和腕足纲动物的腕足。
Each tentacle is designed as a structure with Fin Ray Effect.
每个“触角”都设计成鱼鳍鳍条结构。
Results: The description and transverse features of transverse section of the rhizome were described, and in the powder the microscopic features such as cluster needle crystals, tentacle, ring-thread vessel were found.
结果：描述了中华秋海棠根茎的性状和横切面结构特征，发现其含有簇状针晶、腺毛、环螺纹导管等显微特征。
Digestion, defecation and tentacles 'growth were observed by marking the food with 0.01% neutral red, operating the tentacle and cutting sections.
用中性红标记水螅饵料、手术触手及组织切片等方法，研究水螅的消化、排遗和触手生长模式。