tweak

1. V-T If you tweak something, especially part of someone's body, you hold it between your finger and thumb and twist it or pull it. 扭; 扯

He tweaked Guy's ear roughly. 他粗暴地扯盖伊的耳朵。

2. V-T If you tweak something such as a system or a design, you improve it by making a slight change. 稍稍改进(如系统或设计)[非正式]

He expects the system to get even better as the engineers tweak its performance. 他期望在工程师对该系统的性能稍加改进后，它会运行得更为良好。

3. N-COUNT Tweak is also a noun. 稍稍改进

The camera has undergone only two minor tweaks since its introduction. 这款相机自推出以来只经过两次小的改进。