They have strong leaf color contrast, grow to 2-3ft tall under ideal conditions, and in a pinch can be used in incantations to protect yourself from being bewitched.
它们叶子的颜色对比很强，理想条件下能免长到2~3英尺高。 紧急时还可以保护你不被魔咒所侵害。
2
These parts are vulcanized under pressure to form a pressure-containing sleeve that is the heart of a Pinch Valve.
这些部件是在压力下硫化并形成压力套管，这是夹管阀的心脏部分。
3
If you are still nervous when you in the interview, you can pinch you hands or your legs under the table.