- 信用卡(xìn yòng kǎ): credit card
- 用(yòng): to use; to employ; to have to; to eat or drink; expense or outlay; usefulness; hence; therefore
- 使用(shǐyòng): to use; to employ; to apply; to make use of
- 作用(zuò yòng): to act on; to affect; action; function; activity; impact; result; effect; purpose; intent; to play a role; corresponds to English -ity, -ism, -ization; CL: 個|个(gè)
*CL: Classifier/Measure Word