Sighthole
n. (测量用仪器等上的)观察孔,检查孔,窥视孔
✅ 同义词
🗣️ 情景例句
Good-bye.
再见。
Often and little eating makes a man fat.
少吃多餐，身强体胖。
The swallow shares the virtues of both schools in highest measure.
燕子充分兼有这两类鸟的长处，