霜冻的危险过去后，在这个地区大约是在四月一日左右，我从苗圃买八棵西红柿苗。
When the danger of frost is past, which is about the first of April in this part of the country, I buy eight tomato plants from a nursery.
对抗性筛选出的40株麝香百合苗进行PCR检测，发现有6棵株系扩增出目标条带。
B. 40 Kanamycin resistant seedlings were achieved, 6 Kanamycin resistant seedlings were at random selected for PCR and got the strip.
如果是一棵坏苗，一旦被辨认出来，就应该马上把它拔掉。
But when it is a bad plant, one must destroy it as soon as possible, the very first instant that one recognizes it.
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