to become effective

to become effective
1. (successful) [+ method, way] 能产生预期效果的；有效的
- What is the most effective way of teaching children to read and write? 用什么方法教孩子阅读与写作最有效？
- The vaccine is effective against the most common strain of the disease. 疫苗可以有效防范这种最常见的疾病。
- an effective public transport system 有效运转的公共交通系统
2. (actual) 实际的； [+ control, command] 事实上的
- He assumed effective command of the armed forces. 他实际担任起了武装部队的指挥。
- The rebels have been in effective control of the island since March. 反叛分子自3月起就已实际控制了该岛。
3. (striking) [+ display, outfit] 显著的；给人深刻印象的
4. to become effective
[law, agreement +] 开始生效；起作用
- The ceasefire will become effective as soon as it is accepted by the rebels. 停火协议叛军一旦接受即告生效。
See: effective

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