adj.可收缩的，(开口或管)可变窄的

The heart muscle is highly contractile, allowing it to pump blood effectively.
心脏肌肉高度收缩，能有效泵血。
The muscle fibers in my arm feel incredibly tight and contractile after the workout.
锻炼后，我手臂的肌肉纤维感觉非常紧实且有收缩性。
The plant's tendrils are contractile, enabling them to grasp onto surfaces for support.
植物的卷须具有收缩性，能帮助它们抓住表面以求支撑。
The bacteria's flagella are powered by a contractile motor, allowing them to move around their environment.
细菌的鞭毛由收缩性马达驱动，使其能在环境中移动。
The frog's tongue is highly specialized, with a rapid and powerful contractile ability to catch insects.
青蛙的舌头高度特化，能迅速强力收缩捕捉昆虫。
The drug relaxes the smooth muscle in the airways, reducing its contractility and easing breathing.
这种药物能放松气道中的平滑肌，降低其收缩性，从而改善呼吸。
In biological experiments, scientists study the contraction and relaxation of muscle cells.
在生物学实验中，科学家研究肌肉细胞的收缩和舒张过程。
The caterpillar's gut contains a series of contractile cells that move food along the digestive tract.
毛虫的肠道内有一系列能收缩的细胞，推动食物沿消化道前进。
The electronic muscle (synthetic muscle) is designed to be highly contractile, mimicking natural muscle behavior.
电子肌肉（合成肌肉）设计为高度收缩，模仿天然肌肉的行为。
The robotic arm's artificial muscles are made from flexible and contractile materials, allowing precise movements.
这款机械臂的人造肌肉由柔韧且可收缩的材料制成，实现精确的动作。