Mr Kim is an ace non-smiler .

金先生无疑是一位冷面高手。

ecocn.org

His driving record proved less than ace .

他的驾驶成绩并不是第一流的。

en.bab.la

The report says a major goal for ace eighth grade should be understanding fractions .

该报告表示从幼儿园到八年级的主要目标应该是学会分数。

blog.hjenglish.com