Zf
abbr. 零频率（Zero Frequency）
🗣️ 情景例句
The tuxedo rental store.
礼服出租店。
Nothing is so certain as the unexpected.
天有不测风云，人有旦夕祸福。
but I could not conceal the fact that I was impressed by the size of the diamonds.
其钻石之大给我留下了深刻的印象。