adj. opportunistic
许多非常机会主义的植物都是田野和花园中常见的杂草。
Many of the strongly opportunistic plants are the common weeds of fields and gardens.
这位参议员回应说，反对派对环境问题的担忧是政治上的机会主义。
The senator responded by saying that the opposition's concern for the environment was political opportunism.
大多数偷车贼是机会主义者、不熟练的小罪犯；许多人不到20岁。
Most car thieves are opportunist unskilled petty criminals; many are under 20.
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