Definition (硬币)
- Uncountable
The side of a coin that depicts a person's head; the obverse side of a coin.
人头面（硬币）
Heads came up, so our team gets to decide who serves first.
硬币是正面，所以我们团队可以决定谁先发球。
What is the probability of a coin landing on heads ten times in a row?
硬币连续十次出现正面的概率是多少？
Alright, we'll flip a coin to decide. Heads or tails?
好吧，我们来掷硬币决定。正面还是反面？