非洲培养和留住更多卫生人才的能力面临许多挑战。
The capacity of Africa to produce more health care staff, and retain them, faces many challenges.
这些实验产生了一些优秀的成果，但仍然面临许多挑战。
These experimental approaches have produced some excellent results, although many challenges still remain.
缺少母爱，吃尽父母的拳打脚踢之苦，使得朱莉面临许多挑战。
Lack of maternal love and the blows from her parents' fists have left Julie with challenges.
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