他是个胆小的小男孩，常常躲在母亲身后。

He is a ___timid little boy, often hiding behind his mother.

加兰德先生用他安静、胆怯的声音再次问汤姆。

Mr Garland asked Tom again in his quiet, ___timid voice.

她胆怯的天性阻止她在会议上发言。

Her ___timid nature prevented her from speaking up in meetings.