Lifespans
n. （人或動物的）壽命( lifespan的復數形式 ); 存在期; 使用期; 有效期
??? 情景例句
It probably means he's clearing his throat.
也許表示他正在清喉嚨。
Thank you for your kind cooperation.
謝謝您的合作。
I have a large collection of CDs.
我收集了很多唱片。