英汉双语例句-生物医药大词典

This is often triggered when we breathe in irritants in air pollution and tobacco smoke.

中文意思：
哮喘往往是由于我们吸入的刺激物所诱发，如空气污染、香烟烟雾。

以下为相关句子列表(点击查看，可以看对应的解释）：

	This is often difficult, as in our cities and even in rural areas the landscape was significantly changed after European settlement.			这是非常困难的，在我们城市甚至乡村地带，在欧洲人住扎之后景观发生巨大的变化。
	This is often expressed by saying that in case of large quantum numbers quantum mechanics reducesto classical mechanics and classical electromagnetism .			通常可以表示为大量子数目情形下量子力学“减少”到经典力学和经典电磁学。
	This is often less of an issue for attributes and arguments of a method, but often enough developers forget to specify what the expected return value of a method or function is or which exceptions it can raise or catch.			尽管对于方法属性和参数这显得无足轻重,但是太多的开发人员常常忘记指定方法的预期返回值，或者忘记编写捕捉异常的功能模块。
	This is often referred to as the heuristic, which can be a bit confusing.			这种方式通常称作试探法，有点让人混乱。
	This is often the case for distributed applications.			分布试应用程序经常是这种情况。
	This is often triggered when we breathe in irritants in air pollution and tobacco smoke.			哮喘往往是由于我们吸入的刺激物所诱发，如空气污染、香烟烟雾。
	This is on the low end of the projection only.			这只是保守的估计.
	This is one area of greenery where California cannot claim to be the global leader.			加利福尼亚还不能声称自己是这个绿色领域的全球领跑者。
	This is one big reason, other than merely acting the big-power part, for the military build-up, and could one day bring war with the real superpower.			台湾问题是中国增强军事力量的重要理由，此时中国不再扮演有度量的大国的身份，有遭一日，中国总会因此同真正的超级大国发生战争。
	This is one for the history books: the world\'s firt HALO jump.			这是世界上第一次HALO跳伞*，它将被载入史册。
	This is one in a thousand chance in life.			这是一生难得的机会.