chalkn.粉笔;白垩v.用粉笔写;记录;使变白;归咎
Chalkopyxisn.瓶球藻属(金囊藻科)
chalk brood白垩幼虫病, 蜂子僵死症
chalky bone白垩样骨
chalk soils自垩土
chalk kauri白粉状贝壳杉脂
chalk up to归咎于,归因于
chalk it upv.宣布;记帐
chalk plant白垩植物
chalky gout白垩性痛风
chalk gland垩腺