捕机 meaning in Chinese

catcher

Gwt ： does a bird land in a trap on the ground if there ' s no bait in it ? does a trap spring up from the ground unless it has caught something
吕震中本：若没有诱饵，雀鸟哪能陷在地上的机槛呢？捕机若无所捕得，哪能从地上翻跳起呢？
Meanwhile , we have also studied the variation of the height , the speed and the direction of locust ' s jumping under the disturb of the sounds , the image and airflow of the pneumatic grassland locust suction trap machine
研究了吸捕机的声、像以及气流干扰下对蝗虫跳跃高度、跳跃速度和跳跃方向等特性的影响。
Things going on thus , as i have said , for some time ; i seem d , excepting these cautions , to be reduc d to my former calm , sedate way of living , all these things tended to shewing me more and more how far my condition was from being miserable , compar d to some others ; nay , to many other particulars of life , which it might have pleased god to have made my lot
后来，我也捉过一两只野山羊，但用的都是老办法，即用捕机和陷阱捉到的。因此，此后两年中，我记得我没有开过一次枪，虽然每次出门时还总是带着的。此外，我曾从破船上弄到三把手枪，每次出门，我总至少带上两把，挂在腰间的羊皮皮带上。