turn-on

n.

旋开，接通，刺激；

复数：turn-ons

turn-on time开机时间；接通时间

1. We were all of a twitter on the wedding day.
   举行婚礼的那一天，我们都兴奋极了。
2. It is a real turn on when a girl asks me out.
   当女孩子约我出去的时候，真使我感到兴奋。
3. Many young people are taking drugs to turn on.
   许多年轻人吸毒寻求刺激。
4. A gruff voice jars on one's nerves.
   粗声粗气的声音刺激人的神经。

A Selective Turn-On Fluorescent Sensor for Imaging Copper in Living Cells
A "turn-on"fluorescent sensor for the selective detection of mercuric ion in aqueous media
A Highly Selective Fluorescence Turn-on Sensor for Cysteine/Homocysteine and Its Application in Bioimaging
Selective gold-nanoparticle-based "turn-on"fluorescent sensors for detection of mercury(II) in aqueous solution.
Optical explosives detection: From color changes to fluorescence turn-on. Chemical Society Reviews, 38(9), 2543-2555
Signal Amplification of a “Turn-On” Sensor:  Harvesting the Light Captured by a Conjugated Polymer
Negative charge-pump with circuit to eliminate parasitic diode turn-on
Selective turn-on fluorescent probes for imaging hydrogen sulfide in living cells
Fluorescence turn-on probe for homocysteine and cysteine in water
A selective turn-on fluorescent sensor for Fe and application to bioimaging