这些动词都含“弯、弯曲”之意。
curve : 指变成曲线或弧线状的动作或状态。
- The road curves round to the left.
道路转向左边。 - The road curved around the bay.
那条路沿海湾呈曲线伸展。 - The ball curved through the air.
球在空中沿曲线运动。 - His lips curved in a smile.
他咧嘴笑了。
bend : 普通用词，指把某物变成曲线或角形。用于人时，指头部或身躯弯下。
- The road bends to the left after the traffic lights.
过了第一个红绿灯后道路弯向左侧。 - I bent down and picked up the coins lying on the road.
我弯腰捡起路上的硬币。 - Now, bend forward/over and touch your toes!
现在，向前弯腰触摸脚趾。 - Make sure you bend your knees when you're picking up heavy objects.
提重物时一定要屈膝。 - After her fall she complained that she couldn't bend her leg properly.
摔了一跤之后，她说她的腿不能正常弯曲了。
bow : 指把头部或上身弯向前方的动作，也指社交中的礼节性动作。（延伸阅读：同音异义 | Bough & Bow）
- They bowed to the Queen.
他们向女王鞠躬。 - We bowed our heads in prayer.
我们俯首祷告。 - He bowed down (= very low) before (= in front of) the king and begged for mercy.
他向国王深深鞠躬乞求宽恕。
crook : 指使（手指或手臂）弯曲，也指按照规则或模型弯曲某物。
- She delicately crooked her little finger as she picked up her cup.
她端茶杯时优雅地翘起小指。 - He crooked his finger: 'Come forward,' he said.
他勾勾手指说：“过来。”
twist : 指通过转动、拧或扭使某物成弯曲状。
- The path twists and turns for over a mile.
这条小路弯弯曲曲，长达1英里多。 - She sat there nervously twisting the ring around on her finger.
她紧张地坐在那儿，不停地转着手指上的戒指。 - She twisted her head (round) so she could see what was happening.
她扭过头来，想看看发生了什么事。 - Twist the rope tightly round that post over there.
把绳子紧紧缠在那根柱子上。
