did by halves

• v. 半途而废(不彻底)

did by halves的用法和样例：

例句

用作动词 (v.)

1. He finally fell by the way side.
   他最后半途而废。
2. The government put the skids under the plan by stopping their research grant.
   政府停发研究经费让他们的计画半途而废。