Definition: If two things touch, they are so close to each other that there is no space between them. Level: B2
确保火线不要接触到。
Make sure the live wires do not ___touch.
轮子开始平稳地接触跑道。
The wheels began to ___touch the runway smoothly.
小心！你的手指可能会碰到滚烫的表面。
Careful! Your fingers might ___touch the hot surface.
