at a proper
词语： at a proper
解释： 在适当的时候
词典： 航海专业英汉词典
at a proper 相关解释
在适当的时候 at a proper time
在适当的时候 in due course of time;in due season;in due time
在适当的时候 all in good time;at a proper;at a proper time;at the right moment;in due season;in due time;in the fullness of time