Chinese–English Interpretation: Why Simultaneous Translation Is Uniquely Hard
Chinese and English put information in different places in a sentence — Chinese often saves the key verb or qualifier for later than English would — which means a simultaneous system sometimes has to wait for more of a Chinese sentence before it can commit to an English translation, or vice versa.
Word order is the biggest issue
English sentences tend to front-load structure: subject, verb, object, with modifying clauses trailing off the end. Mandarin frequently does the reverse for time, place, and condition — "next Wednesday, at nine, in the main room, we'll meet" is a perfectly natural Chinese order that an English translation has to substantially reorder, not just word-for-word substitute. For text translation this is a solved problem; for simultaneous translation it means the system sometimes can't commit to the start of an English sentence until it has heard more of the Chinese one than you might expect.
Topic-comment structure compounds this. Chinese frequently states a topic and then comments on it in a way that doesn't map onto English subject-verb-object directly, so a naive word-by-word approach produces grammatically broken English even when every individual word is translated correctly.
Numbers, measure words, and names
Chinese numbers group by 10,000 (万) rather than by 1,000 the way English does, so a figure like 850,000 is naturally spoken as 85万 — a direct, careless translation risks an order-of-magnitude error if the conversion isn't handled explicitly rather than left to a general-purpose model's judgment. Measure words (个, 位, 家, and dozens more) don't exist in English at all and carry no independent meaning to translate — they need to be dropped, not translated literally.
Names are their own challenge in both directions: Chinese names transliterated into English have no single canonical spelling unless the person has already established one, and English names spoken in a Chinese-language conversation are often approximated phonetically in ways a speech recognizer can mishear entirely.
What this means practically
The upshot is that a system built for Chinese-English simultaneous interpretation benefits from language-pair-specific handling — not just a general translation model pointed at Mandarin — particularly around numbers, units, and a short mechanism for looking up how a name or technical term has already been rendered earlier in the same conversation, so it stays consistent rather than shifting mid-meeting.
Be first to try real-time interpretation yourself.
In active testing — join the waitlist and we'll email you when it's ready.
Read next
Interpreting Mandarin Measure Words and Numbers Correctly, Automatically
Two specific patterns cause most of the numeric and grammatical errors in Chinese-to-English translation: measure words, which don't translate to anything and must be dropped, and large numbers, which are grouped differently in the two languages and need conversion, not word-for-word translation.
What Is Real-Time Speech Translation, and How Is It Different From an Interpreter App?
Real-time speech translation listens to speech as it's spoken and produces translated text (and often audio) within a few seconds — continuously, not after you finish a sentence and hit a button.
Simultaneous Interpretation for Video Calls: How It Actually Works
On a video call, simultaneous interpretation is a short pipeline running continuously in the background: audio in, transcribed speech, translated text, and captions or synthesized speech out — fast enough that it never asks the conversation to pause and wait for it.