| 例句 |
This situation is without precedent.这种情况尚无先例。The achievements of this period were without precedent in history.这一时期取得的成就是史无前例的。There isn't any precedent for these events. = These events are without precedent.这种事还从未有过先例。An epidemic on this scale is without precedent.如此规模的流行病是史无前例的。 |