4周搞定2000+托福核心词
坚固；坚度；坚定
firmness
常考释义
n. 坚定；有力；坚挺；明确
Her slight accent added emphasis to the firmness of her voice.
她轻微的口音给她的声音注入了一种坚毅。
Firmness of purpose
意志坚定
n. 坚硬（度）
She walked carefully, as if testing the ground for firmness.
她小心翼翼地走着，像是在检测地面的硬度。
In cooking they lose their firmness and become very sweet.
经烹制，这些东西就不再硬邦邦的了，而且会变得很甜。
n. 稳定（性）；稳固（性）；牢靠（性）
He gingerly tested the firmness of the trapdoor by putting one foot on it.
他把一只脚放在活板门上，小心翼翼地检查它是否牢靠。
n. 紧致；结实
skin treatments for dryness and loss of firmness
皮肤干燥、松弛的治疗方法
the sagging or loss of firmness that often accompanies weight loss
常常伴随着体重减轻而出现的松垂与松弛
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