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- These data demonstrate that magnitude of nodulation response to N may differ between species but despite these differences, legumes will reduce BNF when N availability increases. 这些数据还表明，结瘤对氮反应的程度在不同种间而有不同。但尽管存在这些差异，在氮水平增加时豆类作物均将减少生物固氮。
- Generally, increasing mineral N available to legumes reduces N derived from BNF without enhancing yield appreciably. 一般来，说对豆类作物增加矿质氮的提供会减少生物固氮量而并不能明显提高产量。
- Nitrogen accumulation by non-nodulated soybean (Table 3) measures the amount of mineral N available in the soil. 不结瘤大豆积累的氮素（表3）可以测算出土壤中有效矿质氮的总量。
- To ensure N available from BNF does not limit legume yield, many farmers inoculate their crops with rhizobia. 为确保来自生物固氮的有效氮不限制豆科作物的产量，许多农民用根瘤菌接种他们的作物。
- Some reports indicate reduction of legume BNF by mineral N is dependent on host species and form of N available. 一些报告还指出，通过矿质氮引起的豆类作物生物固氮的减少与寄主品种和有效氮的形态有关。
- Singleton and Tavares unpubished data. * N available from the soil setimated by N uptake by ineffectively nodulated plants (strain SM-5). Singleton和Tavares未发表数据。* 来自土壤的有效氮通过非有效结瘤菌株(SM-5)对N的吸收来估算。
- His eloquence did not avail against the facts. 他的雄辩在事实面前不起什么作用。
- Joe tried to pull the heavy cart, but to no avail. 乔想拉那部笨重的大车，但是拉不动。
- Nothing could avail the dying patient. 没有任何东西能挽救那个濒死者
- The advice we got was of no avail. 我们得到的建议完全没用。
- Such a statement will not avail. 这样的声明没有什么用。
- The medicine did not avail against the disease. 这种药对这种病没有产生疗效。
- Speeches and protests were of no avail. 演讲和抗议全都徒劳。
- We tried to revive him but without avail. 我们试图使他苏醒,但没有成功。
- He fought in the N African campaign during the last war. 在上次战争中他在北非战役参战。
- The doctors tried everything to keep him alive but to no avail. 医生们曾竭尽全力抢救他的生命，但却徒劳无功。
- He tried and tried but all his efforts were of no avail. 他试了又试，但一切努力都不起作用。
- It will avail them to dispose of their booty. 转让赃物对他们来说是有利的。
- I'm afraid my help didn't avail you much. 恐怕我的帮助对你用处不大。
- That will be a total of eighty N T. 那总共八十台币。
