Decay series
[化] 衰变系; 放射系
🧩 词语组成解析
🗣️ 情景例句
We are running a special offer on this holiday.
我们在这个假期有个特价优惠。
It is not how long but how well we live.
问题不是活得长不长而是活得好不好。
There's no need for that. We'll have dinner another time.
不必为那件事惭愧。我们改个时间再共进晚餐吧。