PONS词典中的例句（已经编辑处理）
- an undercover agent
单语范例（未经PONS编辑处理）
That allowed firemen to concentrate the water and the wetting agent on the source and prevent fire from spreading throughout the two storey century old house.
www.theguardian.pe.ca A wetting agent is not needed when applying insecticidal soap sprays.
www.reviewjournal.com Yes, it will cost you more money but always use a wetting agent combined with any sprays used for controlling insects, diseases and weeds.
www.reviewjournal.com A surfactant is a wetting agent, the exact opposite of a hydrophobic agent.
en.wikipedia.org Water-based glazes are sometimes thinned with glycerin or another wetting agent to extend the working time.
en.wikipedia.org