您要查找的是不是：
- They may be quietly forgotten. 可能已被世人所遗忘。
- They may be classed in four groups. 它们可以分成四种。
- Once the machines are tested, they may be put into service. 机器一旦经过试验，就可以投入使用。
- One day they may be able to go anywhere in space. 会有那么一天，它们也许能够进入太空的任何地方。
- They may be due to senile atherosclerosis. 可能是由于老年性动脉硬化。
- They may be liable for military service. 他们可能还有服兵役的义务。
- Try to look unimportant, they may be low on ammo. 试着让自己别那么显眼，他们（敌人）的弹药可能不是很充足。
- They may be engaged for weeks,months or even years. 他们订婚的关系可以持续几个星期、几个月甚至是几年。
- They may be holding an emergency meeting. 他们可能正在开紧急会议。
- They may be in your coat pocket. 它们也许在你上衣口袋里。
- They may be planted at other times of the year. 每年别的时候也可以植树。
- He sent the children out so that the house might be quiet. 他把孩子们打发出去，以便使屋里安静一些。
- They may be present as dimers or tetramers. 它们都以二聚物或四聚物状态存在。
- Knock on the window pane; they may be in. 敲一下玻璃窗,他们或许在里面。
- But at heart, they may be very lonely. 可是他们内心也许是很孤独的。
- They may be considered "semi-courageous". 写匿名信可以叫做“半勇敢”。
- They may be entered only on foot, paw or hoof. 只有长着脚、爪子或蹄子的动物可以进入保护区。
- They may be staying at the Beijing Hotel. 他们可能住在北京饭店。
- They may be working on the project now. 他们可能正在进行这项研究工作。
- Knock at the window pane. They may be in. 敲敲窗玻璃，他们也许在家。
