先在

I had collected material previous to writing.

我写作前先搜集了材料。

We hosed down the car before we waxed it.

我们给汽车打蜡前必须先冲冲车。

Step off twenty feet and then place a marker in the ground.

先步测20英尺, 再地上做出标记。

Sugar, oil and metals are refined before use.

, 金属使用前须先提炼。

He debated heating up the pot first before his friends came.

他考虑朋友们到来之前先把火锅烧热。

Wool jersey should be shrunk before being cut and stitched.

羊毛平针织物裁剪缝纫前应先缩水。

Presoak rice noodles (1 bag) in cold water for 20 minutes.

先将米粉泡冷水中，20分钟后沥乾备用。

You should gather yourself together firstly under conditions of great danger.

极其危险的情况下你应当先控制住自己。

It seems wise to reconnoiter before entering the town.

进入那城前, 先侦察一下是明智的。

Filter out all the dirt before using the water.

用水前先将其中不清洁的东西过滤掉。

Mary scraped the residue of food from the plates before putting them under water.

玛丽把盘子放入水之前先刮去上面的食物残渣。

The evolutionarily later always subsumes and includes the evolutionarily earlier.

进化史上，先来总是被归入后来中。

Pour syrup on it and spread it abroad with a rolling pin.

先把浆倒它上面,然后用擀面杖把浆摊开来。

There's a special enclosure where you can look at the horses before the race starts.

"这里有一处特备的围场,比赛前你可先看看马。"

The research tools are the vision-eikon-compare test 1 and test 2.

挑选受同一时段先进行前测卷，再进行后测卷，测完毕后再进行比较分析。

Xanthone was efficiently synthesized from o-chlorobenzoic acid first by etherization and then by Friedel-Crafts reaction in the presence of aluminium trichloride.

邻氯苯甲酸为原料,先进行醚化,再三氯化铝的作用下进行傅-克反应,可简洁、高效的合成呫吨酮。

The mechanic explained that they would have to make good the damage to the body of the car before they resprayed it.

修理工解释说，给车重新喷漆之前，他们得先把车身毁坏的地方修理好。

The orbiting Discovery crew on the way Sunday to rewire the International Space Station first had to make sure the shuttle's heat shield(heatshield) wasn't damaged during lift-off.

星期日，负责发现号轨道的工作人员跟国际空间站接轨前，必须先确定热障起飞时没有损坏。

Maybe God wants us to meet a few wrong people before meetly the right one, so that when we finally meet the person,we will know how to be grateful.

遇到梦中人之前，上天也许会安排我们先遇到别人，我们终于遇见心仪人时，便应当心存感激。

A kua whakawahia ia e Haroko tohunga, e Natana poropiti hei kingi ki Kihona: na kua piki ake ratou i reira me te koa, na ngateri ana te pa.

祭 司 撒 督 先 知 拿 单 基 训 已 经 膏 他 作 王 。