| 1. | Head-on collision are rare .
迎面碰撞很少发生。 |
| 2. | The outside dew point is so low that mildew is seldom a problem .
户外霜点低，因此霜霉病很少发生。 |
| 3. | Parasitic and nonparasitic cysts rarely occur in the spleen .
寄生虫性和非寄生虫性囊肿在脾脏很少发生。 |
| 4. | Little internalization of various amino acid transport sites occurs .
各种氨基酸输送位点很少发生内在化。 |
| 5. | In adults, fibroblasts in connective tissue rarely undergo division .
成年人结缔组织的成纤维细胞很少发生分裂。 |
| 6. | During the winter month in arid climates, the outside dew point is low so that mildew is seldom a problem .
冬季的月份里，气候干燥，户外露点低，因此很少发生霜霉病。 |
| 7. | Another problem can occur rarely if backflow of process gas is permitted into the secondary air feed line .
如果工艺气体回流入二段空气管线，能发生另外的很少发生的问题。 |
| 8. | Panda births in captivity are a very rare occurrence
圈养大熊猫怀孕产崽的事情很少发生。 |
| 9. | Severity level 23 errors occur rarely
很少发生严重级别为23的错误。 |
| 10. | Severity level 22 errors occur rarely
很少发生严重级别为22的错误。 |
