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| 11. | Therefore, they say, if people were to chew sugar-free gum after a meal, it would help prevent tooth |
| 因此，他们提出饭后嚼无糖口香糖有助于防止牙齿问题。 |
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| -- 来源 -- 高中英语(高二下学期适用) 7 - Unit 21 Human Biology Lesson 1 Chewing Gum |
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| 12. | If one were to take a piece of gum and chew it in his or her mouth and then compare it with an embryo |
| 如果您把口香糖放在嘴里嚼,然后将其与肉团阶段的胚胎进行比较,我们可以断定:肉团阶段的胚胎有着咀嚼过物质的外观。 |
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