-
1. The tightrope walker must be very careful not to let go of the rope too soon.
走钢丝的人必须非常小心，不要过早地松开绳子。
-
2. The government has been trying to tighten regulations on the use of fossil fuels.
政府一直在试图加强对化石燃料使用的监管。
-
3. She was so focused on her work that she didn't realize she had tightened her seat belt.
她太专注于工作了，以至于没意识到她已经系好了安全带。