试水

试水	shì shuǐ	to run water through a system to test it (for leakages etc) / (fig.) to test the waters; to do (sth) on a trial basis
试	shì	to test / to try / experiment / examination / test
水	Shuǐ	surname Shui
水	shuǐ	water / (after a name) ... River / to swim (used mostly in 会水 and 水性) / (coll.) lacking in substance; shoddy / (bound form) additional cost; extra income / classifier for washings of a garment