ABT：About
ASAP: As Soon As Possible
ASL: Age/ Sex/ Location
AFAIK: As Far As I Know
B4: Before
B/C: Because
BBL: Be Back Later
BRB: Be Right Back
BTW:By The Way
CIO: Check It Out
CU: See You
CUL/ CYL: See You Later
DBEYR: Don't Believe Everything You Read
DIIK: Damned If I Known
DKDC: Don't Know Don't Care
DLTM: Don't Lie To Me
EOM: End Of Message
F2F/ FTF: Face To Face
FE: For Example
FYI: For Your Infromation
G2G: Got To Go
G8T/GR8: Great
GF: Girlfriend
GL: Good Luck
GTSY: Glad To See Ya
HAGO: Have A Good One
HAK: Hugs And Kisses
HTH: Hope This (That) Helps
IAC: In Any Case
IC: I See
IDGI: I Don't Get It
IDK: I Don't Know
IDTS: I Don't Think So
IOW: In Other Words
ISS: I Said So
IYSS: If You Say So
J/K: Just Kidding
J/W: Just Wondering
K/KK: Ok
KIT: Keep In Touch
L8R: Later
LMK: Let Me Know
LOL: Laughing Out Loud
LTNS: Long Time No See
N: And/ Know/ Now
NBD: No Big Deal
NM: Never Mind
NMP: Not My Problem
NOYB: None Of Your Business
NP: No Problem
NRN: No Reply Necessary
OMG: Oh My God
OTRH: On The Other Hand
OTW: Otherwise
Pic: Picture
PLS/ PLZ: Please
PPL: People
PW: Password
RUS: Are You Serious
S2U: Same To You
SB: Stand By
SC: Stay Cool
Sec: Second
SIT: Stay In Touch
Sm1: Someone
Sup: What's up?
SYS: See You Soon
T2GO: Time To Go
TBC: To Be Continued
TTYL: Talk To You Later
TY: Thank You
TXT: Text
TYVM: Thank You Very Much
WDYS: What Did You Say
WDYT: What Do You Think
WU: What's up
Y: Why
YGBK: You Gotta Be Kidding
YNK: You Never Know
YTB: You're The Best
看看上面的这些缩写语，乍一看好像不知道是什么意思，不过看到了它们代表的含义以后，是不是感觉很简单，很常用呢~
当然了，在我们知道XYZ是缩写语之前，我们也曾用过它。还记得吗，数学课上，X轴，Y轴，奇变偶不变，符号看象限！那么，这些数学符号，用英语应该怎么表达呢？
先来一个最简单的：1 2=3 用英语怎么说？
One plus two equals three.
（哎呦不错哦， 继续！）
试试这个：½ (x y)英语怎么说？
惊不惊喜？意不意外？！
数学是所有理工学科的基础，是认识科学世界基本工具，数学的重要性不言而喻。下面，我们一起来学学吧~
