This is the word to be used.

这是最当字眼。

To be rude to the old is not proper.

对老人粗鲁是不当。

Lack of the right food may stunt growth.

缺乏当食物会阻碍发育。

Catfall. You recover well from a fall.

你在跌落时能当平衡身体。

Learn to say the right at the right time.

学习在当时候说当话。

The professor punctuated his lecture with a few well-chosen jokes.

教授在讲演中不时插入几个当笑话。

The wound was not properly disinfected and gangrene set in.

伤口未进行当消毒，开始生坏疽。

He ascribed his good health to proper diet and exercise.

他把身体好归当饮食及动。

He tried to exercise an undue influence upon his colleagues.

他想对他施加不当影响。

Complete the following sentences by filling the blanks with proper prepositions and adverbs.

用当冠词和副词填空, 完成下列句子。

One of the cups is out of position.Put it back in position.

有只杯子位置不对, 把它放在当位置。

He and I dissented from each other in choosing a suitable candidate.

他和我在选择当人选这个问题上意见不一致。

Accordingly, if want to use paper of oil absorption face, semidiurnal frequency is the properest.

因此，若要使用吸油面纸，一天两次频率是最当。

It's not proper to patch the roof with nailsick boards.

用多次钉过钉而不结实木板修补屋顶是不当。

If you can work on Saturdays and Sundays, we’ll make it worth your while.

如果你愿意在周六和周日加班，我们会给你当报酬。

"The general mistimed the attack, which should have been made an hour earlier."

"将军在不当时间发起了进攻,一小时前他就应该这样做了。"

The outcome of this patient was excellent due to aggressive resuscitative measures including open-chest cardiac massage.

经过当急救处置，以及开胸心臓按摩后，病患预后状况非常良好。

It's safest to remain a good distance behind, in case the car in front suddenly stops.

最安全方法就是和前面车保持当距离, 以免它突然刹车。

Moderate exercise will benefit you.

当锻炼对你有好处。

Pruning in March leaving no more than 4 nodes per branch is suitable for atemoya.

综合试验之结果，3月为修剪当时间，而留节數则以不超过4节为宜。