boil off
boil off — phrasal verb
- boil offbase form
- boils off3rd person singular
- boiling off-ing form
- boiled offpast simple
1. if a liquid boils off, or you boil it off, it turns into gas and disappears beca
if a liquid boils off, or you boil it off, it turns into gas and disappears because it has been heated until it is very hot
Amelia let the sauce simmer until most of the wine had boiled off.
intransitive: [liquid] boils off
Mizuki stirred the soup until the extra water boiled off and it grew thick.
Omar boiled off the alcohol before adding the cream to the pan.
The chemistry teacher heated the salty water until all the liquid boiled off.
Christopher forgot the kettle on the stove until every drop of water had boiled off.
文法句型
boil off
boil off + object
用法筆記
Subject or object is usually a liquid (water, wine, alcohol, moisture). The intransitive use ('the water boiled off') is more common than the transitive ('boil off the alcohol').
常見錯誤
2. to take gum, wax, or other unwanted matter out of silk or another fabric by boil
to take gum, wax, or other unwanted matter out of silk or another fabric by boiling it in a special liquid
The mill workers boil off the raw silk before they begin dyeing it.
transitive: boil off + [fabric]
Dahlia boiled off the new cloth to wash away the sticky gum and wax.
object is fabric being cleaned of gum/wax
Indra showed the students how to boil off silk threads in a hot bath.
Heloísa warned that dye will not soak in evenly unless you boil off the cloth first.
文法句型
boil off + object
用法筆記
Specialist textile term; the object is the fabric (silk, cloth), and the thing removed is gum, wax, or sizing. Distinguish from sense 1, where the liquid itself disappears rather than being cleaned out of cloth.
boil off — noun
1. the way a very cold liquid such as liquid oxygen slowly turns into gas and is lo
the way a very cold liquid such as liquid oxygen slowly turns into gas and is lost
Engineers measured the boil-off from the rocket's liquid oxygen tank each hour.
noun: boil-off of a cold liquid turning to gas
Élise found that better cooling cut the daily boil-off in the storage tanks.
Eitan checked how much boil-off the cold fuel lost during the long flight.
The thick layer around the tank slows the boil-off and keeps the fuel cold.
- evaporation
everyday word; not limited to cold liquids
用法筆記
Often written with a hyphen ('boil-off') as a noun. Subject is typically a very cold (cryogenic) liquid such as liquid oxygen or liquid gas, not water.
2. the step in making cloth where gum and other unwanted matter are taken out of fa
the step in making cloth where gum and other unwanted matter are taken out of fabric by boiling it in a cleaning liquid
The factory's boil-off leaves the silk soft and ready for bright dyes.
noun: boil-off as a fabric-cleaning step
Anjali studied how the boil-off removes gum from raw silk thread.
Chidi insisted on a careful boil-off before the cloth could take any colour.
Workers at the old mill timed each boil-off to protect the delicate threads.
- scouring
broader cleaning step in textile finishing
用法筆記
Distinguish from noun sense 1: this is a textile-finishing process on fabric, whereas sense 1 is the loss of a cold liquid as gas. The object cleaned is cloth or silk, not a fuel tank.