Otl
abbr. 无输出变压器（Output Transformer Less）；无输出变压器功率放大器；运转时间记录（Operating Time Log）
🗣️ 情景例句
Due to lack of funds
由于缺乏经费
She passed her competitive examination not without difficulty.
她好不容易才通过了答辩考试。
It doesn't matter.
没关系。