tense: 緊張的，拉緊的
The atmosphere was very tense when we heard all the mountaineer died during an avalanche.
當我聽說所有的登山隊員都在一次雪崩中遇難時，氣氛變得十分凝重。
常見搭配：
a tense atmosphere 緊張的氣氛
tense muscle 緊繃的肌肉
dense：密集的，稠密的，密度大的
It is not proper to building a factory in a district with a dense population.
在人口密集的地區不合適建工廠
常見搭配
a tense population 密集的人口
dense traffic 擁擠的人口
dense fog 大霧
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