crooking

crooking of the tubes

炉管弯曲

a river crooking through the valley

弯曲流过的一条河

Having done this the officer, with a jaunty gesture, crooking his elbow high in the air, stroked his moustaches and put his hand to his hat.

吩咐完毕，军官潇洒地高高起胳膊肘，理理胡髭，举手碰了碰帽檐。