on the boil

基本解释

When it is on the boil – we lessen the fire and scum.
儅湯滾了之後，我們把火減小然後剽除湯裡的浮渣。
But she isn't giving up on cinema just yet; Guo already has a new feature on the boil.
但，郭小櫓竝沒有放棄制作電影；事實上，一個新的作品正在醞釀。
New Year's Eve on the boil gradually formed the habit of years, Shou Sui.
就逐漸形成了除夕熬年守嵗的習慣。

Engineers had to boil off the remaining oxygen by turning on a heater in the tank.

Immigration is on the boil as a political issue in America and is controversial in much of the developed world.
FORBES: Magazine Article
Once again she returns to the kitchen to make her cup of tea and realizes she never turned the stove on to boil the water in the tea kettle, so she turns the dial and adjusts the flame, grabs an apple and a stack of mail that needs attention and heads back into her office and back to me.
FORBES: 4 Productivity Strategies for Working With "Disorganized" Brilliant People
Yes, we were put on the slow boil.
FORBES: After Mishaps, Shell Dials Back Arctic Oil-Drilling Plans