1 . not easy
working in these conditions is not easy ., 在這種條件下工作不容易.
2 . difficult
to be difficult and cause a lot of problems ., 可不容易; 不是好玩的.
3 . troublesome
漢字查詢 ... 困難;艱難;不容易〖difficult;hard;troublesome〗 不可;不好〖hardlypossible;bad〗 為難,畏難;感到困難〖feeldifficult〗.
4 . not easily
this book is not easily classifiable ., 這本書不容易歸類.