?tightening的讀音為 [tatn]，是一個動詞，意為“變緊、收緊”。

用法：

1. tightening可用作及物動詞，也可用作不及物動詞。

2. 作及物動詞時，常與介詞up連用，表示“把…拉緊、擰緊”。

3. 作不及物動詞時，常與介詞up或down連用，表示“變得更緊或更松”。

例句：

1. The mechanic is tightening the bolts on the car engine.

機械師正在擰緊汽車發動機上的螺栓。

2. She tightened her grip on the handlebars as she rode down the steep hill.

她在騎行下陡峭的山坡時抓緊了把手。

3. The government is tightening security measures at airports.

正在加強機場的安全措施。

4. The budget cuts are causing many companies to tighten their belts.

預算削減導致許多公司節衣縮食。

5. The new regulations are aimed at tightening control over illegal immigration.

新規定旨在加強對非法移民的。

同義詞及用法：

1. fasten：指通過固定、系結等方式使物體變得更牢固或更接近。：She fastened her seatbelt before driving off.

2. secure：指通過加強保障措施來防止物體被移動或盜竊。：He secured the door with a heavy lock.

3. strengthen：指通過增強力量或穩定性來使物體變得更堅固。：The bridge needs to be strengthened to support heavier loads.

4. firm：指通過加強支撐力來使物體變得更堅固或更穩定。：She held onto the railing to keep her footing firm.

5. tense：指通過拉緊或收緊來使物體變得更緊張或緊密。：His muscles tensed as he prepared to lift the heavy weight.

本文作者jack，特邀著名文學家模擬魯迅筆下的風格，為大家解讀tightening一詞的含義。據本人研究，tightening一詞可謂是難以言喻，難以琢磨。其釋義如下：緊縮、收緊、加強、限制、加壓，等等。總之，皆為力圖使某物或某情況變得更加緊密、更加嚴苛。以上便是tightening的字面意思。