?tightness的意思是指緊密或緊湊的程度，也可以指緊張、壓力或者局促的感覺。在英語中，tightness通常用來描述物體、衣物或者情緒等的狀態。下面是一些關于tightness的用法和例句。

用法：

1. 作為名詞，表示緊密或緊湊的程度。

2. 作為形容詞，表示緊密的、固定的、不松動的。

例句：

1. The tightness of the knot made it difficult to untie.

這個結的緊密程度讓它很難解開。

2. The tightness of her dress emphasized her curves.

她身上衣服的緊身讓她更加曲線突出。

3. The tightness of the rope made it impossible for him to escape.

繩子的緊繃讓他無法逃脫。

4. The tightness in his chest made it hard for him to breathe.

他胸口的壓迫感讓他呼吸困難。

5. The tightness of the deadline caused a lot of stress for the team.

截止日期的嚴格讓團隊壓力很大。

同義詞及用法：

1. Taut: 表示拉緊或繃緊，常用來形容物體表面平整而有張力。

例句：The taut skin on his face showed his anxiety.

2. Constriction: 表示壓縮或收縮，常用來形容身體部位的感覺。

例句：The constriction in her throat made it hard for her to speak.

3. Rigidity: 表示僵硬或固執，常用來形容人的態度或想法。

例句：His rigidity in his beliefs made it difficult for him to accept new ideas.

4. Tension: 表示緊張或壓力，常用來形容情緒或關系。

例句：The tension between them was palpable.

5. Strain: 表示緊張或過度使用，常用來形容身體部位的感覺。

例句：The strain in his muscles showed the intensity of his workout.

以上是關于tightness的詞典解釋。作為網絡辭典編輯，我們需準確描述詞義與用法，同時亦須注意語言簡潔易懂。希望本文能助讀者更深刻理解tightness這一詞語。

【作者：jack】