sign的详细释义
n. 迹象;预兆;记号，符号;手势;信号，暗号
v. 签名，签署;示意;打手势;用信号表示
symbol的详细释义
n. 象征;标志;符号
symbol的参考例句
1、On maps, a cross is the symbol for a church.在地图上，十字符号代表教堂。
2、To represent with or as if with an emblem; symbolize.象征用或好象用象征物来表示;标志
sign的参考例句
1、This is a superscript sign.这是个标在上方的符号。
2、Scorpio is an Autumn Zodiac Sign( as are the Signs of Libra and Sagittarius)。
天蝎：黄道十二宫的第八宫，每年10月23日前后太阳到这一宫。
mark的详细释义
n. 符号;记号;分数，成绩;污点;迹象
v. 做记号;做标记;表明方位;标志;庆祝
mark的参考例句
1、Marking: Every package shall be marked with “SM” in diamond and marked the package number.麦头每件包装应刷上菱形图案内有二字,并应刷上件号
2、To mark or mottle with spots.有斑点，成斑驳用点作标记或使斑驳杂色
常用的英语标识
1.Pull 拉
2.Push 推
3.Shut 此门不通
4.Knock 敲门
5.No smoking. 禁止吸烟
6.No admittance. 闲人免进
7.Mind your head. 小心碰头
8.No right/left turn. 禁止右/左转
9.No parking. 不准停车
10.Drive slowly. 车辆慢行
11.Please keep off the grass 请勿践踏草坪
12.Caution: Slippery Floor 小心地滑
13.Temporarily Closed 暂停服务;临时关闭
14.Post no bills. 不准招贴
15.Please shut the door. 请随手关门
16.Silence/Keep quiet. 静
17.Sold out. 售完
18.Ticket office/Booking office. 售票处
19.MindtheStep/WatchYourStep.当心台阶
20.Please don't touch. 请勿动手
