Showing no look on your face — no smile, no frown, nothing that would let another person read what you feel.

Showing no look on your face臉上不露出任何表情 — no smile, no frown不笑、不皺眉，nothing that would let another person read what you feel沒有任何會讓別人看出你感受的東西。

It comes from the card game poker. If you look pleased with a good hand, the others may stop betting; if you look disappointed with a poor hand, they may see that you are only pretending. So a player learns to keep a still face.

It comes from the card game poker它來自紙牌遊戲poker。If you look pleased with a good hand如果你拿到好牌卻露出開心的表情，the others may stop betting其他人可能就不再下注了；if you look disappointed with a poor hand如果你拿到爛牌卻露出失望的表情，they may see that you are only pretending他們可能會看穿你只是在假裝。So a player learns to keep a still face所以玩家會學著讓臉保持不動。

People now use the word far outside cards: a poker-faced teacher, a poker-faced answer when someone asks how the interview went. It is informal but widely understood, a little colourful rather than official.

People now use the word far outside cards人們現在用這個字，用到遠遠超過牌桌之外：a poker-faced teacher一臉撲克臉的老師，a poker-faced answer when someone asks how the interview went有人問面試怎麼樣時，一個面無表情的回答。It is informal but widely understood它是口語用法，但大家都聽得懂，a little colourful rather than official比較生動而不是正式用語。

In Taiwan you may already know the loan 撲克臉 — that is the same idea.

In Taiwan在台灣，you may already know the loan 撲克臉你可能已經知道「撲克臉」這個外來說法 — that is the same idea就是同一個概念。