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- Be not a visit to Mr. George obligatory? 是不是必须我拜访乔治先生？
- The chemical symbol for copper is "Cu". 铜的化学符号是Cu。
- Attendance at school is obligatory. 上学是强制性的。
- On maps, a cross is the symbol for a church. 在地图上，十字符号代表教堂。
- Cypress branches used as a symbol of mourning. 柏枝作为悲哀象征的柏树枝
- We use x as the symbol for an unknown quantity. 我们用x表示一个未知数。
- The white bird is a symbol of freedom. 这白色的鸟是自由的象徵。
- The Cross is the symbol of Christianity. 十字架是基督教的象征。
- It is obligatory upon us to protect the world from nuclear war. 保护世界免於核子战争是我们的义务。
- The lion is the symbol of courage. 狮子是勇武的象徵。
- The dove is the symbol of peace. 鸽子是和平的象征。
- obligatory symbol 必须符号
- A mark or symbol used in a writing system. 符号，字体文字系统里的符号或标记
- The symbol for the speed of light in a vacuum. 表示真空中光速的物理符号
- Is this business trip obligatory? 这次出差是不是规定的？
- I think compulsory education is obligatory. 我认为义务教育制是必须履行的。
- The symbol for the Roman numeral one hundred. 罗马数字中表示一百的符号
- He only bought the yacht as a status symbol he hates sailing. 他买游艇只是为了显示身分--其实他根本不喜欢玩游艇。
- Be it obligatory on us to help the poor? 我们有义务帮助穷人吗?
- Is it obligatory on us to help the poor? 我们有义务帮助穷人吗?
