tinker
/ˈtɪŋkə(r); `tɪŋkɚ/ n
1 [C] person who travels from place to place repairing kettles, pans, etc （走街串巷的）小炉匠儿.
2 [sing] ~ (at/with sth) act of tinkering （随便的或胡乱的）做事, （尤指）修补, 修理, 改进
I had a tinker at your radio, but I can't mend it. 我把你的收音机修了一下, 但没修好. tinker, v [I, Ipr, Ip]
~ (at/with sth) work in a casual or inexpert way, esp trying to repair or improve sth 随便地或以外行方式做（尤指试著修理或改进某物）
tinker (away) at a broken clock 胡乱修理（著）出毛病的钟
He likes tinkering with computers. 他爱乱改进计算机.
Who's been tinkering (around) with the wiring? 谁总瞎改动电线线路?