Translate faq/design.html#how-fast-are-exceptions

SiriusKoan · SiriusKoan · commit a3418cad1ea8 · 2022-08-23T14:42:56.000+08:00
diff --git a/faq/design.po b/faq/design.po
@@ -421,27 +421,38 @@ msgstr ""
 
 #: ../../faq/design.rst:233
 msgid "How fast are exceptions?"
-msgstr ""
+msgstr "例外處理有多快？"
 
 #: ../../faq/design.rst:235
 msgid ""
 "A try/except block is extremely efficient if no exceptions are raised.  "
 "Actually catching an exception is expensive.  In versions of Python prior to "
 "2.0 it was common to use this idiom::"
 msgstr ""
+"如果沒有例外被丟出，一個 try/except 區塊是非常有效率的。事實上，抓捕例外要付"
+"出昂貴的代價。在 Python 2.0 以前，這樣使用是相當常見的：\n"
+"\n"
+"::"
 
 #: ../../faq/design.rst:245
 msgid ""
 "This only made sense when you expected the dict to have the key almost all "
 "the time.  If that wasn't the case, you coded it like this::"
 msgstr ""
+"這只有在你預料這個字典大多數時候都有鍵的時候才合理。如果並非如此，你應該寫"
+"成：\n"
+"\n"
+"::"
 
 #: ../../faq/design.rst:253
 msgid ""
 "For this specific case, you could also use ``value = dict.setdefault(key, "
 "getvalue(key))``, but only if the ``getvalue()`` call is cheap enough "
 "because it is evaluated in all cases."
 msgstr ""
+"單就這個情況來說，你也可以用 ``value = dict.setdefault(key, "
+"getvalue(key))``，不過只有在 ``getvalue()`` 代價不大的時候才能用，畢竟他每次"
+"都會被執行。"
 
 #: ../../faq/design.rst:259
 msgid "Why isn't there a switch or case statement in Python?"
