1. The earth convulsed uncontrollably, a rift opened suddenly and, with a horrid sucking sound, swallowed the entire pool. 大地失控地剧烈震动，一条裂缝突然出现，随着一声可怕的吞吸声，吞噬了整个池塘。
2. As stimuli were presented, changes in the infant's sucking behavior were recorded. 当刺激出现时，婴儿吮吸行为的变化被记录下来。
3. Instead of flushing, they work like a vacuum cleaner sucking away the astronaut's waste. 不是冲洗，而是像真空吸尘器一样吸走宇航员的排泄物。
4. Increases in nonnutritive sucking were first used as an assessment measure by researchers in 1969. 1969年，研究者们首次将无营养吮吸次数的增加作为评估标准。
5. Without this muscular action, inhaling is like sucking air out of a balloon—the narrow passages tend to collapse. 如果没有这种肌肉运动，吸气就像从气球里吸出空气一样——狭窄的通道往往会坍塌。
