1.
MONITORING OF THE REASONS OF STUDENTS ABSENCE FROM CLASS FOR ILLNESS IN PRIMARY AND SECONDARY SCHOOL IN LUOYANG;
洛阳市中小学生因病缺课病因的监测
2.
Analysis on Absence for disease of middle students in Shanxi Province from 2002 to 2006;
2002～2006年山西省中学生因病缺课情况分析
3.
Surveillance of Illness-induced School Absence during 2006-2007 Academy Years at Jingkou District in Zhenjiang;
镇江市京口区2006-2007学年学生因病缺课情况分析
4.
Student Absences from School through Illness in Futian District of Shenzhen, 1997～2000;
1997～2000年福田区中小学生因病缺课情况分析
5.
STUDY ON RELATIONSHIP AMONG AIR POLLUTION AND ILLNESS-INDUCED ABSENCE、PULMONARY VENTILATION FUNCTION、NON-SPECIAL IMMUNITY OF PUPILS;
大气污染与小学生因病缺课和肺通气功能、非特异免疫功能关系研究
6.
He could not account for his absence from classes.
他说不出缺课的原因。
7.
While it is reasonable to miss a session due to illness or emergency, you must notify me in advance if you will be absent more than once.
如因为生病或是紧急事情而必须缺课时，超过一堂课的话你必须得事先告知我。
8.
The reason for hes absence is his illness.
他缺席的原因是病了
9.
My brother is often absent from work because of illness.
我哥哥常因患病而缺勤。
10.
She' s not at her desk today : she' s on the sick-list.
她今天没上班: 因病缺勤.
11.
The boy was absent because he was ill.
那个孩子因病缺席。
12.
Sickness excuses his absense.
他是因病才缺席的。
13.
Three boys of the class were absent because of illness.
班上三个孩子因病缺席。
14.
coagulation factor deficiency
凝血因子缺乏性疾病
15.
He was absent for two weeks, so he had a lot of homework to make up.
他缺了两周的课，因此有很多功课要补。
16.
No absences from school just because of diabetes. Special arrangements can always be made for blood testing, insulin shots, or meals.
不因糖尿病而缺课。总能在上学条件下为注射，测血糖和饮食作出适当的安排的。
17.
Missing a week of classes with that virus halfway through the semester certainly didn't help.
学期中间病毒感染缺课一周肯定对功课有影响。
18.
She has little resistance to germs and so is often ill.
她对病菌缺乏抵抗力，因而经常生病。