阻挡层的英文：
barrier layer
trapping layer
blocking layer
n. 屏障，障碍物；栅栏；壁垒；界线
- A weak barrier,defence,team
不结实的挡板、无力的防御、弱队 - A train plowed into the barrier at the end of the platform.
火车撞上了月台尽头的栅栏。 - As a result, no barrier can stop you.
结果，不再有障碍能阻挠你。
n. 层；产卵鸡；卵用鸡；层次；阶层；地层
v. 分层放置，形成层次；用压条法培植
- This hen is a good layer.
这只母鸡下蛋多。 - BL ( Bridge-Layer)
架桥装置 - Onions have layers, you get it?
洋葱是有层次的，你明白了吗？
n. 诱捕
- ball float trap
浮球式阻汽器 - The pain was caused by a trapped nerve.
这疼痛是由于神经受抑制引起的。 - The rat was caught in a trap.
那只老鼠被捕鼠器捉住了。