bootstrap
noun [ C ] uk/ˈbuːt.stræp/ us/ˈbuːt.stræp/
（靴筒后的）靴襻，拔靴带
a piece of leather or other strong material at the back of a boot that you use to help you pull the boot on
Idiom
pull/haul yourself up by the/your (own) bootstrapsidiom 靠自己的努力取得成功，自力更生
to improve your situation without any help from other people
He left school at 15 and pulled himself up by his bootstraps to ultimately head up a company. 他15岁就离开了学校，完全靠自己的能力最终成为一家公司的主管。