release lever解锁手柄;分离杆
lever principle杠杆原理
词根:lever
n.leverage 手段,影响力;杠杆作用;杠杆效率
leveraging 杠杆作用;举债经营
v.leveraging 利用贷款进行投机(leverage的ing形式)
3.The lever gets them out of the box, but after more and more trials, they stopped scratching at the bars and pushing at the ceiling.
杠杆让它们出了盒子,但在越来越多的尝试之后,它们不再抓栏杆和推天花板。