The influences of solution pH, dosage of iron, reaction temperature and time, and the initial concentration of DCAA ( or TCAA) on the degradation were studied.

The qualitative analysis of degradation products of the degradation pathway may be obtained: TCAA → DCAA → MCAA → acetic acid.

降解产物的定性分析得出，可能的降解途径：三氯乙酸→二氯乙酸→氯乙酸→乙酸。

He saw the boyish countenance of Tom barter before him.

他看到汤姆巴特那张孩子气的脸正对着他。

Our schools are facing the street is Park Road.

我们学校正对着大街，就是公园路。

Then I opened the other eye and saw the image that made me lose my voice. There on the other side of the bed was a girl in a crimson7 red dress smiling at me.

于是我又睁开另一只眼，这时我所看到的让我失声叫了起来：在床的一侧有一个穿着深红色衣服的女孩正对着我笑呢！

Young man, you are pissing on my top boots.

小伙子，你正对着我最好的靴子撒尿。

I was a man and I smiled at a woman.

我成为了一名真正的男人了，我正对着一个女人微笑。

This is because infrared is directional, meaning the receiver that is on stage can only hit the iPhones that are pointed directly at the device.

这一情况是因为红外信号是定向的，这就意味着只有当iPhone正对着舞台上的设备的时候，发出的信号才能够传送到iPhone中去。

I was looking for the post office and there it was in front of me all the time, staring me in the face!

我一直在找邮局，没想到邮局就在我面前，正对着我。

The line of houses fronted straight onto the road.

这排房子正对着马路。

Aviation buffs are buzzing over blurry photographs now surfacing on Chinese military websites purporting to show Beijing's first stealth fighter jet, the Chengdu J-20 fighter.

航空迷们正对着中国军事网上几张模糊的照片窃窃私语，声称是北京的第一架隐形战斗机，成飞制造的J-20。

We first see the hair of Anna Morales ( Jessica Chastain) during the opening credits of "A Most Violent Year." She's at her makeup mirror.

我们第一次看到安娜·莫拉莱斯（Anna Morales，杰西卡·查斯坦[Jessica Chastain]饰）的头发是在《至暴之年》（A Most Violent Year）的片头字幕里。她正对着镜子化妆。

He hit the nail squarely on the head with the hammer.

他用锤子正对着钉子敲下去。

Their house is almost opposite ours.

他们的房子几乎正对着我们的房子。

Walls of sliding glass doors face live oaks and marshland on the Wilmington River.

屋内有几扇推拉门正对着威尔明顿河（Wilmington River）边的栎树林和湿地。

The wall we faced now was different from the others.

现在我们正对着的这面墙和别的墙都不一样。

The cliff commands a vast expanse of blue ocean.

这座悬崖下正对着一望无际的蓝色大海。

The fireplace and the two chairs were exactly opposite Marius.

壁炉、桌子和那两把椅子都正对着马吕斯。

The grey floor-tiles with their snowflake motif were always swept clean, even though her fluffy mongrel terrier shed his long hair everywhere, and though the door was kept open to get some air in from the bike-filled, rowdy, dusty street.

有着雪花图案的灰色地砖总是一尘不染，尽管她的长毛geng（反犬旁那个更，这里出不来，悲剧了。）经常会把它的毛发掉落一地，尽管敞开的大门正对着一条满溢尾气、嘈杂的、尘土飞扬的大街。

Seated directly opposite Queen Elizabeth II, was Ms. Markle's mother, Doria Ragland, the descendant of slaves on plantations in the American Deep South.

正对着伊丽莎白二世女王就坐的是马克尔的母亲多里娅·拉格兰（Doria Ragland），她是美国南部诸州种植园奴隶的后裔。

Sprawling riverside Gipsy recently reopened after a six-month hiatus on Krasny Oktyabr, or Red October, an island opposite the Kremlin that is home to the former chocolate factory complex of the same name.

临河而建、占地广阔的Gipsy，经过6个月的沉寂后，在红十月岛（Krasny Oktyabr）上重新开业，这座小岛正对着克里姆林宫，以前曾是同名巧克力加工厂的厂房所在地。