firmness
/fɜːmnɪs/
n. 坚固, 坚牢, 坚定
英文释义
n. the muscle tone of healthy tissue
n. the property of being unyielding to the touch
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firmness
/fɜːmnɪs/
n. 坚固, 坚牢, 坚定
英文释义
n. the muscle tone of healthy tissue
n. the property of being unyielding to the touch
登录 后可记录学习进度。