drownproof

词形变化

drownproofed drownproofing drownproofs 三单 drownproofs drownproofing 现在分词 drownproofed 过去式 drownproofed 过去分词

释义与例句

v.
  1. 1.

    To train (a person) to float in water without sinking or drowning, occasionally raising the mouth above the surface to take a breath.

    及物

词源

From drown + -proof.

来源：wiktionary