Elmiger says using light to sanitize a plane is safer than cleaning solutions.

Elmiger说，用光来给飞机消毒比清洁液更安全。

They must wash and clean themselves, and then put their feet in a special kind of cleaning solution.

他们必须洗干净自己，然后把他们的脚放在一种特殊的清洁溶液里。

I remember the harsh acid smell of the cleaning solution, and the scraping sound of stiff iron brushes against rough brick.

我记得清洁溶液的刺鼻酸味，以及坚硬的铁刷刮擦粗糙砖块的声音。

To ensure the conditions are safe, every evening after closing, Navy Pier staff spray the plastic balls with a special cleaning solution.

为确保安全，每天晚上闭馆后，海军码头的工作人员会用特殊的清洁剂喷洒塑料球。

Due to its ability to clean surfaces and impart a streak-free shine, ammonia is found in many household and industrial-strength cleaning solutions.

由于氨能够清洁表面并赋予无条纹光泽，因此它常常被添加到家用和工业洗涤液中。