Retention pin
[化] 止动销
🧩 词语组成解析
retention
[ri'tenʃən]
n. 保留;记忆力，保持力;滞留，扣留;闭尿;
pin
[pin]
n. 钉;别针，扣针，饰针;大头针;没价值的东西;
vt. 压住;（用钉等）钉住，钉住，别住，扣住;用障壁等)围住，关住（俚语）抓住;[军]牵制;
adj. 针的;钉的;销的;大头针的;
🗣️ 情景例句
Robots can be used for many tasks which are considered too dangerous for people to do.
机器人能完成许多对人类来说是很危险的任务。
If it doesn't rain tomorrow, will you do a favor for me?
如果明天不下雨的话，你会帮我忙吗？
She watched TV for half an hour after supper. Then she started her homework.
晚饭后她看了半小时电视。然后她开始做家庭作业。