Tensioner
n. 拉紧器, 张紧装置；皮带张力器
🗣️ 情景例句
A baby gets used to voices.
婴儿习惯各种声音。
The President is going to address the nation on television this evening.
总统今晚将向全国发表电视讲话。
Predicting the future is notoriously difficult.
众所周知，预测未来是非常困难的。