the thenar
可数名词，指手掌拇指根部的鱼际隆起，也可指控制该部位的肌肉；指具体一侧时用定冠词 the。
The thenar is the fleshy mound at the base of the thumb.
鱼际是拇指根部那块隆起的肉。
拇指球或控制它的肌肉；手掌；足底
拇指球或控制它的肌肉
The ball of the thumb, or the muscle controlling it.
After kneading dough all morning, the thenar of her right hand was tired.
揉了一上午的面团后，她右手的大鱼际酸了。
用法提示：thenar 作主语，表示拇指根部隆起的部位，用 of 说明所属。
Press your thenar gently against the table and hold it there for ten seconds.
把大鱼际轻轻压在桌子上，保持十秒钟。
用法提示：thenar 作 press 的宾语，指手掌上拇指下方的肌肉区域。
Some guitarists have a more prominent thenar on the hand that presses the strings.
有些吉他手按弦的那只手上有更明显的大鱼际。
用法提示：thenar 用单数形式，前加 a 表示可数名词，指拇指球肌肉。
可数名词，指手掌拇指根部的鱼际隆起，也可指控制该部位的肌肉；指具体一侧时用定冠词 the。
The thenar is the fleshy mound at the base of the thumb.
鱼际是拇指根部那块隆起的肉。
说明疼痛、肿胀或伤口所在位置时，常用 over the thenar 这一介词结构。
She felt a sharp pain over the thenar when gripping the racket.
她握球拍时鱼际处一阵刺痛。
复数 thenars 指双手各自的鱼际，常与 both、each 等词搭配。
Both thenars were tender after the long climb.
长时间攀爬之后，两手鱼际一按就痛。
grammar · medium
易错句子I feel a sharp pain in thenar of my right hand.
正确表达I feel a sharp pain in the thenar of my right hand.
thenar 是可数单数名词；这里指某只手上特定的一块拇指球，属于特指，必须加定冠词 the。汉语名词前没有冠词这一词类，学习者容易直接省略，写成 in thenar of...
grammar · medium
易错句子Both thenar are swollen after the game.
正确表达Both thenars are swollen after the game.
thenar 是可数名词，前面用 both 且指两只手各一个、共两个部位时必须用复数 thenars，谓语也随之用 are。汉语名词不随数量改变形式，学习者常漏掉复数词尾 -s，形成单数形式配复数谓语的错误。
thenar 指拇指根部的鱼际（拇指球）；hypothenar 指小指根部的小鱼际，两者位置相对，解剖学中常成对出现。
thenar 是解剖学名词，指拇指球；tenor 指男高音（或要旨），二者拼写相近但意义无关，医学语境应选 thenar。
noun phrase
noun phrase
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