Tau.
[医] 寿命(放射性物质)
🗣️ 情景例句
I got it.
我猜对了。
Idleness is the root (or mother) of all evil (or sin or vice).
懒惰是万恶之源。
crowning the youngest girl with flowers in the spring, holding a summer festival on Midsummer Eve, giving thanks for the harvest in the autumn,
春天在河边为最年轻的姑娘戴上花冠，夏天在河边欢庆“仲夏前夜”，秋天在河边丰收而感恩，