;
;
，
手;a drum clinic.
乐器
的学术讨论会。
；大力争取；大力争取；声动楼吹；刹车
炉汽包，筒；筒式炉轮；转筒式制动器；形闸筒；煤焦转筒，
真空过滤机式干燥机直径；制动直径；滚筒直径；磁头直径a drum clinic.
乐器的学术讨论会。
the drum of their feet.
他们笃笃的步伐声。
The skin of the drum is taut.
皮绷得很紧。
The drums spoke.
声咚咚
The drums rolled.
声隆隆
They beat the drum for freedom.
他们吹自由。
the war drums throbbed.
战咚咚地擂着。
He gave the drum a bang.
他猛敲一下。
to drum the floor with one's feet
用脚敲踏地板作声。
drum up new business.
努力开创新的事业
drums were beating in the distance.
远处有击声。
he heard a regular drum beat.
他听到了有规律的击声。
a drum of powdered bleach.
一桶漂白粉。
he bangs the drum of the free market.
他极力吹自由市场。
We heard the drums beating.
我们听到咚咚地响。
hear drums pounding in the distance
听见远处有咚咚地敲着
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