他们的理论直到1980年才被接受，当时更有针对性的调查显示这一理论是错误的。
Their theory was accepted until 1980, when more focused investigations showed it to be incorrect.
新规定更有针对性，如果需要可以在今后加紧控制。
The new rules are more targeted, and can be tightened further if need be.
已有的解决方案就是更有吸引力和更有针对性的广告。
The solution that has come up [is] more compelling and more targeted advertising, " he said.
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