choral
adj
of, composed for or sung by a choir 唱诗班的; 为唱诗班创作的; 由唱诗班演唱的
a choral society 唱诗班合唱团
choral evensong 合唱晚祷
Beethoven's choral symphony 贝多芬的合唱交响曲.
and we have to lower into the ground and haul out of the ground great lengths of drill pipe which are rotated by an engine at the top and are fitted with a cutting bit at the bottom.