It's about this high.
大約有這么高。
There was much discussion about the reasons for the failure.
就失敗的原因進行了大量的討論。
The population is increasing at about 6% per year.
人口以每年約6%的速度增加。
It's only human nature to be worried about change.
對變革有憂慮不過是人之常情。
We estimated it would cost about 5 000.
我們估計要花費大約5000歐元。