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1·It's a constant struggle to try to keep them up to par.

要使他们达到标准是一场持久战。《柯林斯英汉双解大词典》

2·The goods are not up to par.

价钱都在货物上标明了。

3·Your work is not up to par this week.

你这星期的工作没有达到标准。

4·A: Yes, your last shipment wasn't up to par.

A：嗯，你上次送去的货没有达到标准。

5·Yes, your last shipment wasn't up to par.

嗯，你上次送去的货没有达到标准。

6·Your ideas haven't been up to par lately.

最近你的一些设想实在都不正常。

7·Yes, your last shipment wasn't up to par.

上次送去的货没有达到标准。

8·Yes , your last shipment wasn't up to par .

嗯，你上次送去的货没有达到标准。

9·I did not think her performance was up to par.

我认为她表现得不及平时。

10·Not up to par.

不符合标准。