But many defects exist in the pear industry such as unreasonable varieties structure, low yield per unit area, the shortage of high quality fruits, poor benefit and so on.
但是，从整个梨产业结构来说还存在不少问题，如品种结构不合理，单位面积产量低，优质果少，经济效益差等。
He didn't speculate as to which is the more likely culprit, but said that many things, such as gene mutations, could cause defects in methylation that might result in infertility.
至于哪个更可能是原因他并没能做出预测，但是他说许多东西如基因突变也能导致甲基化的缺陷，这也可能导致不育。
But it's worth considering. Systems using many locks are more likely to have defects, and there's a performance hit to maintaining many locks, too.
但是这个建议是值得考虑的；使用很多锁的系统会更可能有缺陷，而且维护这些锁也会影响性能。
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