更严重的是

Androgynus was a kind of hyperaccumulator in Cd, with critical value of 50 mg/kg, above which would cause poison in S. androgynus, and even dead when it was up to 800mg/kg; transfer coefficient would decrease with the increase in treated concentrations, which show that plant would protest Cd against transferring to above-grounds and causing poison.

以上结果说明五指山野菜是Cd超积累植物，且50 mg/kg时是五指山野菜正常生长的临界值，高于此浓度，将对其产生毒害，当浓度为800 mg/kg时，植株出现死亡；随处理浓度的增加，转移系数逐渐变小，说明植物在高Cd胁迫下阻止Cd向地上部分转移而产生更严重的毒害。

Because it may be indicative of a more serious problem, such as a cavity ...

如果你的牙齿对……过敏你可能想用特殊牙膏……但你仍需要立即去看牙医，因为牙齿过敏可能预示更严重的问题，比如蛀牙空洞……从以上可以看出，选项 A， B， C都是牙齿过敏可能出现的一些个别的情况，都不是全面的，只有选项 D是对这段原文的转述和概括，故 D为正确答案。

It remains to be seen whether this was a one-month blip or something more serious.

目前仍需要进一步观察，以确定这仅仅是单月的下滑，还是存在更严重的问题。

More worryingly, it is compounding China's already grim pollution.

更令人担忧的是，它还被与中国严重的污染联系在一起。

I thought that no one could cure me and I was dying.

更不幸的是，我的病越来越严重了。

Worse, steel pollutes more than any other industry in China, perhaps in the world.

更糟糕的是，在中国，也许在世界，钢铁工业所造成的污染要比中国——也许是全世界——其它任何行业都更加严重。

An even more serious problem would be if the contractor or sub-contractor sues you, for whatever reason.

一个更严重的问题是如果承包或分包商要控告你，不论原因。

Chapter Three explains the financial characters, such as quite heavy tax crop of turning in Qianliang , the extremely heavy Puhang corvee, the rigorous horse corvee, the many Zhuangtian and many other heavy corvees, which indicates the specialities of the Capital Area in Ming dynasty because of the heavy exploitations from the center government.

第三章：阐述了明代北直隶起运税额重、铺行之役重、马政严苛、各种杂役繁重及多庄田等财政特点，说明明代北直隶所具有的这些财政特点是其作为畿辅地区所特有的，是其受中央政府掠夺更严重的表现。

Since ours is not so much a pagan (which is to say pre-Christian) society as it is a post-Christian one, the dangers are all the more serious.

置身与其说是异教徒社会是一个后基督教一、更危险的是所有的严重。

Heat exhaustion is more serious than heat cramps.

中暑是更严重的比热痉挛。

Do not gum up the work by telling mother what we are going to do .

别告诉母亲我们要干的事，那会把事情搞糟的。

In recent years, application of the partial prestressed concrete beam s is developed.

近年来，随着部分预应力砼梁应用的推广，发现我国规范所采用的名义拉应力法的计算结果不稳定。