user-defined造句 61 You can use user-defined properties as a simple, unstructured and untyped extension mechanism.英文造句accouchementgallowayrugaembgeneral counselbe up to the standardserumsshowmanshiptheiablissfulnesslatticedphysical exertioncalderwest africatetterbrussels sproutswedetysonnonlinear equationsaint petersaint pauldiscrete dataquadratic functionninety-fourveronastenographtenpin bowlingforebodyinterest-free