例句與造句

1. The 16th drift ( Samson Pit ) was the main draining adit even before Sieberstollen was finished.
2. To go deeper a draining adit with a lower altitude was necessary because " Gr黱hirscher Stollen " had reached its limit.
3. It's difficult to find draining adit in a sentence. 用draining adit造句挺難的