锅炉灰尘的英文：
boiler dust

boiler是什么意思：
n. 锅炉；热水器

The boiler discharged steam.
锅炉排放了蒸汽。

The boiler burst up just now.
那只锅炉刚爆裂了。

Pipes convey hot water from the boiler to the radiators.
通过管道把热水从锅炉输送到散热器里.

Can release a large quantity of energy from the boiler.
第二个要点就是往恒温器内输入的一点能量可以从锅炉中释放出大量的能量。

The building was destroyed when the defective boiler exploded
那个有毛病的锅炉爆炸时,那座楼被炸毁了。

dust是什么意思：
n. 尘土；粉尘
v. 擦灰；掸去；撒

dusted the cookies with sugar;dust crops with fertilizer.
将饼撒上糖粉；把化肥撒在作物上

Dust sugar on to a cake.
将糖撒在糕点上。

The carriage left a trail of dust.
马车后扬起了一缕烟尘。

He dusted his trousers.
他掸掉裤子上的尘土。

She dusts every day.
她每天掸灰尘。