... obstacle to drainage 排水障碍 obstacle to sth 纪念碑 ; 形成阻碍 greatest obstacle to peace 安全上最大障碍 ...
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一方面是消极的影响，对教与学形成阻碍。
On the other hand, it is a passive influence, which hinder the language teaching and learning.
但是过多的耳垢可能会变硬并且形成阻碍物，干扰声波降低听力。
But extra wax can harden and form a blockage that interferes with sound waves and reduces hearing.
由于咽喉后部的软腭组织过于放松，会对吸气形成阻碍，这时人们就会打鼾。
Snoring occurs when the soft palate tissue at the back of the throat relaxes too much, obstructing the entrance to the throat.
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